Karen Swarer, MD
Karen Swarer, MD is an Obstetrics & Gynecology Physician in Baltimore, MD, registered under NPI 1003202417.
Getting there
Here is what surrounds this office in Baltimore, based on OpenStreetMap data collected Sep 11, 2026. Parking is available about 254 ft away. There is EV charging 0.36 mi from the office (SWTCH) — useful if you are driving in from out of town. The nearest transit stop is 383 ft away, served by 9101 Hospital Drive Northbound. A pharmacy sits 0.49 mi from the entrance (Fuller Pharmacy), which helps if you leave with a prescription.
Getting here and what is nearby
Transit 262 ft ~1 min
Parking 240 ft ~1 min
Parking 245 ft ~1 min
Parking 254 ft ~1 min
Transit 9103 Franklin Square Drive Opposite Westbound 353 ft ~2 min
Transit 9101 Hospital Drive Northbound 383 ft ~2 min
EV charging SWTCH 0.36 mi ~8 min
Pharmacy Fuller Pharmacy 0.49 mi ~10 min
6918 Ridge Road, Rosedale 21237
Mo-Fr 08:00-18:00;Sa 09:00-13:00
Distances are straight‑line estimates — walking routes may be longer. Hours and phone numbers can change; call ahead to confirm.
Credentials and Medicare
| Licence | State | Specialty |
|---|---|---|
| A163979 | CA | Obstetrics & Gynecology Physician |
| D0099396 | MD | Obstetrics & Gynecology Physician primary |
Licences are recorded in 2 states: CA, MD. Providers licensed in several states often practise near a state border or deliver telehealth across state lines.
- Status
- Approved
- Provider type
- Practitioner - Obstetrics/gynecology
- PAC ID
- 4284934910
- Enrollment ID
- I20240216000910
Medicare enrolment is recorded as approved under the provider type Practitioner - Obstetrics/gynecology. Being enrolled means the provider can bill Medicare; it does not tell you whether they are currently accepting new Medicare patients. Call the office to confirm.
Licensed in 2 states
This provider holds licences in 2 states: California and Maryland. The practice address on file is in Baltimore, MD, but a licence in another state usually means they see patients there too — either at a second location or by telehealth. If the address above is far from you, it is worth calling to ask whether they practise closer to where you live.
- Licence
- D0099396
- Specialty
- Obstetrics & Gynecology Physician
Licence numbers are self-reported to NPPES at registration. They do not confirm a licence is currently active, in good standing, or valid for the specialty shown — only the state board can tell you that, which is why we link to each one.
What Obstetrics & Gynecology covers
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women. NUCC Health Care Provider Taxonomy, code 207V00000X
All registered taxonomy codes
This provider registers 2 taxonomy codes. The primary code is what appears on most claims; the others record additional recognised specialties.
| Code | Specialty | Licence | State | |
|---|---|---|---|---|
| 207V00000X | Obstetrics & Gynecology Physician | A163979 | CA | |
| 207V00000X | Obstetrics & Gynecology Physician | D0099396 | MD | primary |
The taxonomy records how the provider classifies their own practice. It does not confirm which conditions they currently treat, whether they are accepting new patients, or which insurance they take — call the office for that.
Full NPPES record
An NPI-1 identifies a single person. It stays with the clinician for life, even if they move practice or change state, which is why the address on file can lag behind where they actually work today.
| NPI | 1003202417 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | Apr 13, 2015 |
| Last updated | Jun 28, 2024 |
| Status | Active |
| Sole proprietor | No |
| Gender | Female |
| Credential | MD |
| Practice address |
9103 FRANKLIN SQUARE DR STE 305 Baltimore, MD 21237 (443) 777-7608 |
Number check
How the check works, step by step
Every NPI carries a Luhn check digit — the same scheme used on credit cards. CMS prefixes the number with 80840 before computing it, which marks it as a US health identifier.
| Digit | 8 | 0 | 8 | 4 | 0 | 1 | 0 | 0 | 3 | 2 | 0 | 2 | 4 | 1 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 4 | 0 | 4 | 4 | 2 |
Sum = 43 · next multiple of 10 = 50 · check digit = 7 · actual last digit = 7
A valid check digit only means the number is well-formed. It does not mean the provider is licensed, active, or in good standing — those are separate questions answered by the sections above.