Joann Pfundstein, M.D.
Internal Medicine Physician · Fairfax, VA
Joann Pfundstein, M.D. is an internal medicine physician with a practice address in Fairfax, Virginia, and NPI 1912900598, issued on May 27, 2005. Check the license (Virginia 0101052483, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.
- Name
- Joann Pfundstein
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 0101052483 VA
Self-reported in NPPES; status is on the state search - Practice location
- 3020 Hamaker CT, Fairfax, VA 22031
- Phone
- (571) 327-5107
- Enumerated
- May 27, 2005
- Record last updated
- Sep 12, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (571) 327-5786
- Medicaid ID
- 5873576 VA
- Medicare enrollment
- Enrolled (PECOS I20070302000332); accepts Medicare assignment
- Medical or professional school
- Rutgers R W Johnson Medical School (Cam/New Bruns/Pisc), 1990
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 3,599 in Virginia → Look up another NPI →
Also registered at 3020 Hamaker CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Joann Pfundstein in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersVirginia Department of Health Professions
Search for license 0101052483Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
12% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,808 Medicare Part D claims for 182 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 68 claims were for opioids.
Most prescribed
- Rosuvastatin Calcium223 claims
- Atorvastatin Calcium122 claims
- Levothyroxine Sodium116 claims
- Lisinopril97 claims
- Amlodipine Besylate72 claims
- Metformin Hcl69 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Joann Pfundstein among 3,599 internal medicine physician records in Virginia
Joann Pfundstein, M.D. is one of 3,599 internal medicine physician records with a practice address in Virginia. 77% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 77% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1990 · median 2003 among the 2,234 with a school on file
- Record last updated2016 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
108 internal medicine physician records list a practice address in Fairfax
They are 108 of the 6,584 NPPES records with a practice address in Fairfax, and 3,599 internal medicine physician records in Virginia.
All 3,599 in Virginia → Every provider in Fairfax → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
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- James Long, M.D.Fairfax, VA 220311164485488
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- Bradford Pontz, M.D.Fairfax, VA 220311225097298
Common questions
What is Joann Pfundstein, M.D.'s NPI number?
Joann Pfundstein, M.D.'s National Provider Identifier (NPI) is 1912900598, issued on May 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Joann Pfundstein, M.D. located?
The NPPES record lists a practice address at 3020 Hamaker CT, Fairfax, VA, 22031. Phone: (571) 327-5107. Providers update this record themselves, so call before visiting.
How can I verify Joann Pfundstein, M.D.'s license?
NPPES lists Virginia license number 0101052483, as entered by the provider. Search the Virginia Department of Health Professions at https://dhp.virginiainteractive.org/lookup/index. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joann Pfundstein, M.D. prescribe under Medicare Part D?
In 2024, Joann Pfundstein, M.D. had 2,808 Medicare Part D claims for 182 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.