Individual provider Active NPI

Megan Ryan-Riffle, CRNP

  • Nurse Practitioner
  • Owings Mills, MD
National Provider Identifier
1356957534
Registry record updated Jul 17, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Nurse PractitionerTaxonomy code 363L00000X
License
R211398 Issued in MD
Practice address
21 Crossroads Dr Ste 200
Owings Mills, MD 21117-5483
Phone
(410) 581-8140
NPI assigned
Sep 22, 2020
Last updated
Jul 17, 2026By the provider in NPPES
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Jul 17, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 3

Specialty (taxonomy)CodeLicenseStatePrimary
Nurse Practitioner 363L00000X SP023597 PA
Family Nurse Practitioner 363LF0000X SP023597 PA
Nurse Practitioner 363L00000X R211398 MD Primary

Addresses

Primary practice location

21 Crossroads Dr Ste 200
Owings Mills, MD 21117-5483

Mailing address

10200 Grand Central Ave Ste 220
Owings Mills, MD 21117-4366

Other practice location 1

1 Heritage Ln
Emmitsburg, MD 21727-9103
Phone (301) 988-8822

Other practice location 2

6040 Sykesville Rd
Eldersburg, MD 21784-6000
Phone (301) 988-8222

Other practice location 3

3000D Ventrie Ct
Myersville, MD 21773-7817
Phone (240) 215-6310

Other practice location 4

450 S Washington St Ste A
Gettysburg, PA 17325-2500
Phone (717) 339-3105

Other practice location 5

1562 Opossumtown Pike
Frederick, MD 21702-4920
Phone (240) 215-6310

Other practice location 6

501 W 7th St
Frederick, MD 21701-4586
Phone (240) 215-6310

Other practice location 7

504 E Ridgeville Blvd
Mount Airy, MD 21771-5942
Phone (240) 215-6310

Other practice location 8

3430 Worthington Blvd
Frederick, MD 21704-7017
Phone (240) 215-6310

Other practice location 9

230 W Patrick St
Frederick, MD 21701-6945
Phone (240) 215-6310

Other practice location 10

16403 Old Emmitsburg Rd
Emmitsburg, MD 21727-8929
Phone (240) 215-6310

Other practice location 11

7211 Bank Ct
Frederick, MD 21703-8483
Phone (240) 215-6310

Other practice location 12

15 E Frederick St
Walkersville, MD 21793-8234
Phone (240) 215-6310

Other practice location 13

400 W 7th St
Frederick, MD 21701-4506
Phone (240) 215-6310

Other practice location 14

141 Thomas Johnson Dr
Frederick, MD 21702-4502
Phone (301) 846-0100

Other practice location 15

75 Thomas Johnson Dr
Frederick, MD 21702-4895
Phone (240) 215-6310

Other practice location 16

194 Thomas Johnson Dr
Frederick, MD 21702-4679
Phone (240) 215-6310

Other identifiers 1

IdentifierTypeStateIssuer
R211398OtherCVS

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address Mryanriffle@primecaremedical.com Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in DC, MD, PA, VA4 enrollments
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: No
Green means eligible to order or refer.

Enrollment records 4

Enrollment IDStateProvider typePAC IDDetails
I20201218002237 DC Practitioner - Nurse Practitioner 8022420876 Reassigns benefits to 2 organizations
I20201221000558 MD Practitioner - Nurse Practitioner 8022420876 Reassigns benefits to 6 organizations
I20210419000007 PA Practitioner - Nurse Practitioner 8022420876 Reassigns benefits to 2 organizations
I20260109002956 VA Practitioner - Nurse Practitioner 8022420876 Reassigns benefits to 1 organization

Care Compare profile

Medicare Care Compare
Specialty
Nurse Practitioner
Education
Other, 2019
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Group practices
Maryland Medical First PAGroup PAC ID 1850329715, 26 clinicians

Practice addresses (Care Compare)

194 Thomas Johnson Dr
Frederick, MD 21702-4679
Phone (240) 215-6310

400 W 7TH St
Frederick, MD 21701-4506
Phone (240) 215-6310

4011 Randolph Rd
Silver Spring, MD 20902-1054
Phone (410) 661-4670

8901 Clement Ave
Parkville, MD 21234-2603
Phone (410) 661-4670

Hospital & facility affiliations

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Nurse Practitioner

State licenses

LicenseStateTypeSpecialty
R211398MDMDNurse Practitioner

Practice roles

OrganizationSpecialtyStatusNew patients
Maryland Medical First P.a. CurrentSince Dec 29, 2025 Accepting new patients
Promed Preferred PA 5 Professional Corporation CurrentSince Oct 10, 2025 Accepting new patients
Wellspan Medical Group CurrentSince Apr 19, 2021 Accepting new patients
Frederick Health Medical Group LLC CurrentSince Sep 1, 2022 Accepting new patients
Promed Preferred VA Professional Corporation CurrentSince Oct 4, 2025 Accepting new patients
Infinite Medical PC Nurse Practitioner CurrentSince Sep 13, 2023 Accepting new patients
Wellspan Medical Group CurrentSince Apr 19, 2021 Accepting new patients
Frederick Health Medical Group LLC CurrentSince Sep 1, 2022 Accepting new patients
Wellspan Medical Group Current Accepting new patients
Holy Cross Health Urgent Care CurrentSince Feb 1, 2022 Accepting new patients
Easy Health Medical Solutions PC Nurse Practitioner CurrentSince Jun 10, 2025 Accepting new patients
Frederick Health Hospital Inc PastSince Jan 1, 2021 Accepting new patients

Locations (25 of 26)

10960 Wilshire Blvd
Ste 406
Los Angeles, CA 90024

1 Price Dr
Elkton, MD 21921
Phone (410) 398-6474

16403 Old Emmitsburg Rd
Emmitsburg, MD 21727
Phone (240) 566-3100

141 Thomas Johnson Dr
Frederick, MD 21702
Phone (301) 620-7478

1562 Opossumtown Pike
Frederick, MD 21702
Phone (240) 566-4500

194 Thomas Johnson Dr
Frederick, MD 21702
Phone (240) 215-6370

230 W Patrick St
Frederick, MD 21701
Phone (240) 215-6370

400 W 7th St
Frederick, MD 21701
Phone (240) 566-3300

501 W 7th St
Frederick, MD 21701
Phone (301) 360-2574

75 Thomas Johnson Dr
Frederick, MD 21702
Phone (301) 631-3674

8115 Maple Lawn Blvd
Ste 350
Fulton, MD 20759
Phone (240) 744-0001

14200 Laurel Park Dr
Laurel, MD 20707
Phone (301) 953-7980

504 E Ridgeville Blvd
Mount Airy, MD 21771
Phone (301) 703-5452

3000D Ventrie Ct
Myersville, MD 21773
Phone (301) 663-3137

8901 Clement Ave
Parkville, MD 21234
Phone (410) 661-4670

10072 Darnestown Rd
Rockville, MD 20850
Phone (240) 642-3220

3430 Worthington Blvd
Urbana, MD 21704
Phone (240) 215-6900

4011 Randolph Rd
Wheaton, MD 20902
Phone (301) 933-2500

250 Skillman St
Ste 202
Brooklyn, NY 11205

329 S Oyster Bay Rd
Plainview, NY 11803
Phone (714) 452-1961

450 S Washington St
Ste A
Gettysburg, PA 17325
Phone (717) 339-3105

330 Innovation Blvd
Ste 205
State College, PA 16803
Phone 2152452131105

1600 S George St
York, PA 17403
Phone (717) 848-3615

25 Monument Rd
Ste 270
York, PA 17403
Phone (717) 741-8250

3421 Concord Rd
York, PA 17402
Phone (717) 851-2441

Interoperability endpoints

  • FHIR API: https://fhir4.healow.com/fhir/r4/BAFGCA
  • Direct secure messaging: mryanriffle@primecaremedical.com

Organizations & group practices 14

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

View all 14

Hospital & facility affiliations 1

Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1600732800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1784246400000",
    "number": "1356957534",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "10200 GRAND CENTRAL AVE STE 220",
            "city": "OWINGS MILLS",
            "state": "MD",
            "postal_code": "211174366"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "21 CROSSROADS DR STE 200",
            "city": "OWINGS MILLS",
            "state": "MD",
            "postal_code": "211175483",
            "telephone_number": "410-581-8140"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "1 Heritage Ln",
            "address_purpose": "LOCATION",
            "city": "Emmitsburg",
            "state": "MD",
            "postal_code": "217279103",
            "country_code": "US",
            "telephone_number": "301-988-8822",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6040 Sykesville Rd",
            "address_purpose": "LOCATION",
            "city": "Eldersburg",
            "state": "MD",
            "postal_code": "217846000",
            "country_code": "US",
            "telephone_number": "301-988-8222",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3000D Ventrie Ct",
            "address_purpose": "LOCATION",
            "city": "Myersville",
            "state": "MD",
            "postal_code": "217737817",
            "country_code": "US",
            "telephone_number": "240-215-6310",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "450 S Washington St Ste A",
            "address_purpose": "LOCATION",
            "city": "Gettysburg",
            "state": "PA",
            "postal_code": "173252500",
            "country_code": "US",
            "telephone_number": "717-339-3105",
            "fax_number": "717-798-3670",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1562 Opossumtown Pike",
            "address_purpose": "LOCATION",
            "city": "Frederick",
            "state": "MD",
            "postal_code": "217024920",
            "country_code": "US",
            "telephone_number": "240-215-6310",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "501 W 7th St",
            "address_purpose": "LOCATION",
            "city": "Frederick",
            "state": "MD",
            "postal_code": "217014586",
            "country_code": "US",
            "telephone_number": "240-215-6310",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "504 E Ridgeville Blvd",
            "address_purpose": "LOCATION",
            "city": "Mount Airy",
            "state": "MD",
            "postal_code": "217715942",
            "country_code": "US",
            "telephone_number": "240-215-6310",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "3430 Worthington Blvd",
            "address_purpose": "LOCATION",
            "city": "Frederick",
            "state": "MD",
            "postal_code": "217047017",
            "country_code": "US",
            "telephone_number": "240-215-6310",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "230 W Patrick St",
            "address_purpose": "LOCATION",
            "city": "Frederick",
            "state": "MD",
            "postal_code": "217016945",
            "country_code": "US",
            "telephone_number": "240-215-6310",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "16403 Old Emmitsburg Rd",
            "address_purpose": "LOCATION",
            "city": "Emmitsburg",
            "state": "MD",
            "postal_code": "217278929",
            "country_code": "US",
            "telephone_number": "240-215-6310",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "7211 Bank Ct",
            "address_purpose": "LOCATION",
            "city": "Frederick",
            "state": "MD",
            "postal_code": "217038483",
            "country_code": "US",
            "telephone_number": "240-215-6310",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "15 E Frederick St",
            "address_purpose": "LOCATION",
            "city": "Walkersville",
            "state": "MD",
            "postal_code": "217938234",
            "country_code": "US",
            "telephone_number": "240-215-6310",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "400 W 7th St",
            "address_purpose": "LOCATION",
            "city": "Frederick",
            "state": "MD",
            "postal_code": "217014506",
            "country_code": "US",
            "telephone_number": "240-215-6310",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "141 Thomas Johnson Dr",
            "address_purpose": "LOCATION",
            "city": "Frederick",
            "state": "MD",
            "postal_code": "217024502",
            "country_code": "US",
            "telephone_number": "301-846-0100",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "75 Thomas Johnson Dr",
            "address_purpose": "LOCATION",
            "city": "Frederick",
            "state": "MD",
            "postal_code": "217024895",
            "country_code": "US",
            "telephone_number": "240-215-6310",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "194 Thomas Johnson Dr",
            "address_purpose": "LOCATION",
            "city": "Frederick",
            "state": "MD",
            "postal_code": "217024679",
            "country_code": "US",
            "telephone_number": "240-215-6310",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "RYAN-RIFFLE",
        "first_name": "MEGAN",
        "credential": "CRNP",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2020-09-22",
        "last_updated": "2026-07-17",
        "certification_date": "2026-07-17",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "PA",
            "license": "SP023597",
            "primary": false
        },
        {
            "code": "363LF0000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner, Family",
            "state": "PA",
            "license": "SP023597",
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "",
            "desc": "Nurse Practitioner",
            "state": "MD",
            "license": "R211398",
            "primary": true
        }
    ],
    "identifiers": [
        {
            "code": "01",
            "desc": "Other (non-Medicare)",
            "issuer": "CVS",
            "identifier": "R211398",
            "state": null
        }
    ],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "Mryanriffle@primecaremedical.com",
            "affiliation": "N",
            "endpointDescription": "email",
            "use": "DIRECT",
            "useDescription": "Direct",
            "contentType": "OTHER",
            "contentTypeDescription": "Other",
            "contentOtherDescription": "PrimeCare Medical",
            "address_1": "6040 Sykesville Rd",
            "city": "Eldersburg",
            "state": "MD",
            "country_code": "US",
            "postal_code": "217846000",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Owings Mills, MD

Sources for this page

Verify at the official NPI Registry.