Joann Pfundstein, M.D.
NPI 1912900598 · Internal Medicine Physician · Fairfax, VA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joann Pfundstein, M.D. is a Internal Medicine Physician provider in Fairfax, VA (NPI 1912900598).
Provider details
- NPI number
- 1912900598
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 0101052483 (VA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
21 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
758 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 155 | $8 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 148 | $16 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 142 | $137 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 131 | $143 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 121 | $97 |
| Administration of Influenza Virus VaccineG0008 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 65 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 223 | 69 |
| Atorvastatin Calcium | 122 | 35 |
| Levothyroxine Sodium | 116 | 32 |
| Lisinopril | 97 | 27 |
| Amlodipine Besylate | 72 | 21 |
| Metformin Hcl | 69 | 21 |
| Zolpidem Tartrate |
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-05-27
- Last updated
- 2016-09-12
Frequently asked questions
- What is Joann Pfundstein's NPI number?
- Joann Pfundstein's National Provider Identifier (NPI) is 1912900598, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joann Pfundstein's specialty?
- Joann Pfundstein is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Joann Pfundstein located?
- Joann Pfundstein's practice location on file with NPPES is 3020 Hamaker Ct, Fairfax, VA 22031-2238.
- What is Joann Pfundstein's phone number?
- The practice phone number listed in the NPPES registry for Joann Pfundstein is (571) 327-5107.
- Does Joann Pfundstein accept Medicare?
- Joann Pfundstein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joann Pfundstein's NPI active?
- Yes — Joann Pfundstein's NPI (1912900598) is active in the NPPES registry as of the last update on 2016-09-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.