Individual provider Active NPI

Margaret Walkup Arnold, M.D.

  • Vascular Surgery Physician
  • Baltimore, MD
National Provider Identifier
1043439268
Registry record updated Aug 22, 2019
On this page

Key facts

NPPES NPI Registry
Primary specialty
Vascular Surgery PhysicianTaxonomy code 2086S0129X
License
60 251976 Issued in NY
Practice address
4940 Eastern Ave
Baltimore, MD 21224-2735
Phone
(410) 550-4335
NPI assigned
Apr 25, 2007
Last updated
Aug 22, 2019By the provider in NPPES
Sex
Female
Sole proprietor
Yes

NPPES NPI Registry

Updated by the provider on Aug 22, 2019

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

Specialties & licenses 2

Specialty (taxonomy)CodeLicenseStatePrimary
Vascular Surgery Physician 2086S0129X D73428 MD
Vascular Surgery Physician 2086S0129X 60 251976 NY Primary

Addresses

Primary practice location

4940 Eastern Ave
Baltimore, MD 21224-2735

Mailing address

212 Woodlawn Rd
Baltimore, MD 21210-2547
Phone (443) 799-8795

Electronic endpoints 1

TypeEndpointUseAffiliation
Direct Messaging Address marnol21@jhmi.edu Direct

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in MD
Eligible to order & refer
  • Part B services: Yes
  • Medical equipment: Yes
  • Home health: Yes
  • Power mobility devices: Yes
  • Hospice: Yes
Green means eligible to order or refer.

Enrollment records 1

Enrollment IDStateProvider typePAC IDDetails
I20120625000442 MD Practitioner - Vascular Surgery 3072782937 Reassigns benefits to 3 organizations

Care Compare profile

Medicare Care Compare
Specialty
Vascular Surgery
Education
Other, 2002
Medicare assignment
Accepts the Medicare-approved amount as payment in full
Telehealth
Offers telehealth services
Group practices
Medstar Heart Institute LLCGroup PAC ID 5698932960, 308 clinicians
Medstar Medical Group II LLCGroup PAC ID 0547413825, 3,726 clinicians

Practice addresses (Care Compare)

12 Medstar Blvd
Bel Air, MD 21015-1798
Phone (410) 554-6550

3300 N Calvert St
Suite 2
Baltimore, MD 21218-2820
Phone (410) 554-6550

3333 N Calvert St
Baltimore, MD 21218-2867
Phone (410) 261-8500

9105 Franklin Square Dr
Rosedale, MD 21237-3930
Phone (410) 574-1330

9501 Old Annapolis Rd
Suite 220
Ellicott City, MD 21042-6332
Phone (301) 621-6570

Merit-based Incentive Payment System (MIPS)

Final score
85.94 of 100Reported as group
Quality
66.29
Promoting interoperability
100
Improvement activities
40
Cost
74.65

Procedures performed for Medicare patients

ProcedureNumber of procedures
Varicose vein removal24

National Provider Directory

National Provider Directory
Medicare enrollment (NPD)
Enrolled
Credentials
Doctor of Medicine

State licenses

LicenseStateTypeSpecialty
60 251976NYMDVascular Surgery Physician

Practice roles

OrganizationSpecialtyStatusNew patients
Medstar Medical Group II LLC CurrentSince Sep 1, 2025 Accepting new patients
Johns Hopkins University CurrentSince Jul 1, 2012 Accepting new patients
Medstar Heart Institute LLC CurrentSince Aug 1, 2022 Accepting new patients
Johns Hopkins University CurrentSince Jul 1, 2012 Accepting new patients
Johns Hopkins University Current Accepting new patients
Medstar Medical Group II LLC Past Accepting new patients
Frederick Health Hospital Inc Past Accepting new patients

Locations

201 E University Pkwy
Baltimore, MD 21218
Phone (410) 554-2651

3333 N Calvert St
Baltimore, MD 21218
Phone (410) 235-5405

3333 N Calvert St
Ste 325
Baltimore, MD 21218
Phone (410) 554-2950

4940 Eastern Ave
Baltimore, MD 21224

600 N Wolfe St
Baltimore, MD 21287

12 Medstar Blvd
Ste 170
Bel Air, MD 21015

9501 Old Annapolis Rd
Ste 220
Ellicott City, MD 21042
Phone (410) 772-2000

1406 Crain Hwy S
Ste 106
Glen Burnie, MD 21061
Phone (410) 768-6440

9000 Franklin Square Dr
Rosedale, MD 21237
Phone (410) 682-7000

9101 Franklin Square Dr
Ste 212
Rosedale, MD 21237
Phone (410) 391-3637

9105 Franklin Square Dr
Ste 209
Rosedale, MD 21237
Phone (410) 574-1330

Organizations & group practices 7

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.

NPI Registry JSON

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

{
    "created_epoch": "1177459200000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1566432000000",
    "number": "1043439268",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "212 WOODLAWN RD",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212102547",
            "telephone_number": "443-799-8795"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "4940 EASTERN AVE",
            "city": "BALTIMORE",
            "state": "MD",
            "postal_code": "212242735",
            "telephone_number": "410-550-4335"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "ARNOLD",
        "first_name": "MARGARET",
        "middle_name": "WALKUP",
        "credential": "M.D.",
        "sole_proprietor": "YES",
        "sex": "F",
        "enumeration_date": "2007-04-25",
        "last_updated": "2019-08-22",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2086S0129X",
            "taxonomy_group": "",
            "desc": "Surgery, Vascular Surgery",
            "state": "MD",
            "license": "D73428",
            "primary": false
        },
        {
            "code": "2086S0129X",
            "taxonomy_group": "",
            "desc": "Surgery, Vascular Surgery",
            "state": "NY",
            "license": "60 251976",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [
        {
            "endpointType": "DIRECT",
            "endpointTypeDescription": "Direct Messaging Address",
            "endpoint": "marnol21@jhmi.edu",
            "affiliation": "N",
            "endpointDescription": "hospital email",
            "use": "DIRECT",
            "useDescription": "Direct",
            "address_1": "4940 Eastern Ave",
            "city": "Baltimore",
            "state": "MD",
            "country_code": "US",
            "postal_code": "212242735",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "other_names": []
}

Other providers in Baltimore, MD

Sources for this page

Verify at the official NPI Registry.