Active NPI
Peggy J. Guerrero-Martin, M.D.
- Pediatrics Physician
- Ellicott City, MD
National Provider Identifier
1891759890
On this page
Key facts
NPPES NPI Registry- Primary specialty
- Pediatrics Physician
- License
- D0050253
- Practice address
- 9501 Old Annapolis Rd
Suite 101
Ellicott City, MD 21042-6314 - Phone
- (410) 992-9339
- Fax
- (410) 964-5150
- NPI assigned
- Apr 14, 2006
- Sex
- Female
- Sole proprietor
- No
NPPES NPI Registry
Registry information is reported by the provider to CMS and is not verified. About this source
Specialties & licenses 1
| Specialty (taxonomy) | Code | License | State | Primary |
|---|---|---|---|---|
| Pediatrics Physician | 208000000X | D0050253 | MD | Primary |
Addresses
Primary practice location
9501 Old Annapolis Rd
Suite 101
Ellicott City, MD 21042-6314
Mailing address
6722 Fait Ave
Baltimore, MD 21224-3003
Phone (410) 633-8445
Medicare participation
Medicare enrollment files- Medicare fee-for-service enrollment
- Not listed in the public Medicare enrollment file
National Provider Directory
National Provider Directory- Medicare enrollment (NPD)
- Enrolled
- Credentials
- Doctor of Medicine
Practice roles
| Organization | Specialty | Status | New patients |
|---|---|---|---|
| Frederick Health Hospital Inc | Past | Accepting new patients | |
| White Oak Pediatrics, DRS. Battiata & Impeduglia, P.a. | Pediatrics | Past | Accepting new patients |
Organizations & group practices 2
Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.
-
- General Acute Care Hospital
- Frederick, MD
- NPI 1538165527
-
- Pediatrics Physician
- Millersville, MD
- NPI 1356715239
Pediatrics
NPI Registry JSON
The complete NPPES record for this NPI in the NPI Registry API format.
{
"created_epoch": "1144972800000",
"enumeration_type": "NPI-1",
"last_updated_epoch": "1783900800000",
"number": "1891759890",
"addresses": [
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "MAILING",
"address_type": "DOM",
"address_1": "6722 FAIT AVE",
"city": "BALTIMORE",
"state": "MD",
"postal_code": "212243003",
"telephone_number": "410-633-8445"
},
{
"country_code": "US",
"country_name": "United States",
"address_purpose": "LOCATION",
"address_type": "DOM",
"address_1": "9501 OLD ANNAPOLIS RD",
"address_2": "SUITE 101",
"city": "ELLICOTT CITY",
"state": "MD",
"postal_code": "210426314",
"telephone_number": "410-992-9339",
"fax_number": "410-964-5150"
}
],
"practiceLocations": [],
"basic": {
"last_name": "GUERRERO-MARTIN",
"first_name": "PEGGY",
"middle_name": "J.",
"name_prefix": "Dr.",
"credential": "M.D.",
"sole_proprietor": "NO",
"sex": "F",
"enumeration_date": "2006-04-14",
"last_updated": "2026-07-13",
"status": "A"
},
"taxonomies": [
{
"code": "208000000X",
"taxonomy_group": "",
"desc": "Pediatrics",
"state": "MD",
"license": "D0050253",
"primary": true
}
],
"identifiers": [],
"endpoints": [],
"other_names": []
}Other providers in Ellicott City, MD
Sources for this page
- NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Jul 13, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
- National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.