Active NPI
Megan Ryan-Riffle, CRNP
- Nurse Practitioner
- Owings Mills, MD
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Nurse Practitioner
- License
- R211398
- 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, 2026
- Sex
- Female
- Sole proprietor
- Yes
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 3
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| 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
| Identifier | Type | State | Issuer |
|---|---|---|---|
| R211398 | Other | CVS |
Electronic endpoints 1
| Type | Endpoint | Use | Affiliation |
|---|---|---|---|
| Direct Messaging Address | Mryanriffle@primecaremedical.com | Direct |
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Enrolled in DC, MD, PA, VA
- Eligible to order & refer
- Part B services: Yes
- Medical equipment: Yes
- Home health: Yes
- Power mobility devices: Yes
- Hospice: No
Enrollment records 4
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
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
| License | State | Type | Specialty |
|---|---|---|---|
| R211398 | MD | MD | Nurse Practitioner |
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Maryland Medical First P.a. | Current | Accepting new patients | |
| Promed Preferred PA 5 Professional Corporation | Current | Accepting new patients | |
| Wellspan Medical Group | Current | Accepting new patients | |
| Frederick Health Medical Group LLC | Current | Accepting new patients | |
| Promed Preferred VA Professional Corporation | Current | Accepting new patients | |
| Infinite Medical PC | Nurse Practitioner | Current | Accepting new patients |
| Wellspan Medical Group | Current | Accepting new patients | |
| Frederick Health Medical Group LLC | Current | Accepting new patients | |
| Wellspan Medical Group | Current | Accepting new patients | |
| Holy Cross Health Urgent Care | Current | Accepting new patients | |
| Easy Health Medical Solutions PC | Nurse Practitioner | Current | Accepting new patients |
| Frederick Health Hospital Inc | Past | 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
- https://fhir4.healow.com/fhir/r4/BAFGCA
- 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.
-
dba Frederick Health Medical Group
- Family Medicine Physician
- Frederick, MD
- NPI 1619258225
-
- Nurse Practitioner
- Fulton, MD
- NPI 1972179141
-
- Internal Medicine Physician
- Brooklyn, NY
- NPI 1053200410
PA
-
- Internal Medicine Physician
- Brooklyn, NY
- NPI 1376343194
VA
-
dba WellSpan Digestive Health
- Gastroenterology Physician
- York, PA
- NPI 1669770004
-
dba Chesapeake Oncology Hematology Associates
- Hematology & Oncology Physician
- Stevensville, MD
- NPI 1467337337
-
- Family Nurse Practitioner
- Finksburg, MD
- NPI 1942718010
-
- Family Medicine Physician
- Mount Airy, MD
- NPI 1114771862
-
- Urgent Care Clinic/Center
- Rockville, MD
- NPI 1679226377
-
dba WellSpan Pediatric Surgical Specialist
- Pediatric Surgery Physician
- York, PA
- NPI 1104799428
Hospital & facility affiliations 1
Hospitals and other facilities this clinician is affiliated with according to Medicare Care Compare.
-
dba Frederick Health Hospital
- General Acute Care Hospital
- Frederick, MD
- NPI 1538165527
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
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 17, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
- Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.