Jan Zakrzewski, M.D.
NPI 1063855328 · Infectious Disease Physician · Upper Marlboro, MD
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jan Zakrzewski, M.D. is a Infectious Disease Physician provider in Upper Marlboro, MD (NPI 1063855328).
Provider details
- NPI number
- 1063855328
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- D85540 (MD)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 160 | 37 |
| Elviteg/Cob/Emtri/Tenof Alafenbrand: Genvoya | 41 | 11 |
| Abacavir/Dolutegravir/Lamivudibrand: Triumeq | 40 | — |
| Darunavir/Cobicistatbrand: Prezcobix | 36 | — |
| Emtricitab/Rilpiviri/Tenof Alabrand: Odefsey | 27 | — |
| Atorvastatin Calcium | 25 | — |
Practice location
Mailing address
Additional practice locations (1)
- 3800 Reservoir Rd NwDept of MedicineWashington, DC 20007-2113Phone: (202) 444-8168Fax: (877) 303-1460
Registry dates
- Enumerated
- 2013-04-16
- Last updated
- 2021-05-28
- Certified
- 2021-05-28
Frequently asked questions
- What is Jan Zakrzewski's NPI number?
- Jan Zakrzewski's National Provider Identifier (NPI) is 1063855328, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jan Zakrzewski's specialty?
- Jan Zakrzewski is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Jan Zakrzewski located?
- Jan Zakrzewski's practice location on file with NPPES is 1221 Mercantile Ln, Upper Marlboro, MD 20774.
- What is Jan Zakrzewski's phone number?
- The practice phone number listed in the NPPES registry for Jan Zakrzewski is (301) 618-5647.
- Does Jan Zakrzewski accept Medicare?
- Jan Zakrzewski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jan Zakrzewski's NPI active?
- Yes — Jan Zakrzewski's NPI (1063855328) is active in the NPPES registry as of the last update on 2021-05-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.