Stephen Witanowski, MD
Stephen Witanowski, MD is an Internal Medicine Physician in Baltimore, MD, registered under NPI 1003040726. NPPES records them as a sole proprietor, meaning the practice is not incorporated as a separate legal entity.
Getting there
Here is what surrounds this office in Baltimore, based on OpenStreetMap data collected Sep 1, 2026. Parking is available about 768 ft away. There is EV charging 943 ft from the office (SemaCharge) — useful if you are driving in from out of town. A pharmacy sits 860 ft from the entrance (Walgreens), which helps if you leave with a prescription. If you arrive early, there is a coffee shop 0.24 mi away.
Getting here and what is nearby
Parking 351 ft ~2 min
Restaurant Playa Bowl 442 ft ~2 min
2632 Quarry Lake Drive, Pikesville 21208
Coffee Quarry Bagel & Cafe 495 ft ~2 min
2628 Quarry Lake Drive, Mount Washington 21209
Restaurant Pizza Blitz 511 ft ~2 min
2622 Quarry Lake Drive, Pikesville 21208
Restaurant La Foodmarketa 546 ft ~3 min
2620 Quarry Lake Drive, Pikesville 21208
Parking 734 ft ~3 min
Parking 768 ft ~3 min
Pharmacy Walgreens 860 ft ~4 min
EV charging SemaCharge 943 ft ~4 min
Coffee Starbucks 0.24 mi ~5 min
Grocery Fresh Market 0.25 mi ~6 min
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 |
|---|---|---|
| D0080458 | MD | Internal Medicine Physician primary |
This provider holds licence D0080458 issued in MD. A licence number in NPPES reflects what was filed at registration — it does not confirm the licence is still active today.
- Status
- Approved
- Provider type
- Practitioner - Internal Medicine
- PAC ID
- 7113051186
- Enrollment ID
- I20160208000078
Medicare enrolment is recorded as approved under the provider type Practitioner - Internal Medicine. 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.
What Internal Medicine covers
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs. NUCC Health Care Provider Taxonomy, code 207R00000X
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 | 1003040726 valid check digit |
|---|---|
| Entity type | Individual (NPI-1) |
| Enumeration date | May 9, 2009 |
| Last updated | Jan 25, 2016 |
| Status | Active |
| Sole proprietor | Yes |
| Gender | Male |
| Credential | MD |
| Practice address |
2700 QUARRY LAKE DR SUITE 280 Baltimore, MD 21209 (410) 469-5544 Fax (410) 585-2867 |
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 | 0 | 4 | 0 | 7 | 2 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Doubled? | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 | — | ×2 |
| Value | 8 | 0 | 8 | 8 | 0 | 2 | 0 | 0 | 3 | 0 | 4 | 0 | 7 | 4 |
Sum = 44 · next multiple of 10 = 50 · check digit = 6 · actual last digit = 6
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.