Michael Callahan
Physician Assistant · Fredericksburg, VA
Michael Callahan is a physician assistant with a practice address in Fredericksburg, Virginia, and NPI 1356979538, issued on Apr 1, 2020. Check the license with the Virginia board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Michael Callahan
- Primary taxonomy
- Physician Assistant 363A00000X
- Practice location
- 4600 Spotsylvania Pkwy, Fredericksburg, VA 22408
- Phone
- (540) 498-4000
- Enumerated
- Apr 1, 2020
- Entity
- Type 1 · individual
Also registered at 4600 Spotsylvania Pkwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Arielle Abbate, PHARMDPharmacist1740469006
- Yousef Almuzaini, DOInternal Medicine Physician1376030254
- Ann Baker, MDInternal Medicine Physician1275750804
- Catherine Barnes, R.N., N.P.Neonatal Nurse Practitioner1427259621
- Helen Bellar, MDAnesthesiology Physician1275524530
- Nag Raj Birudavol, M.D.Emergency Medicine Physician1669429312
Verify Michael Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Virginia board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
98% fewer Medicare Part D claims than the average physician assistant in 2024
14 Medicare Part D claims, against an average of 832 among the 95,030 providers of this specialty who prescribed in Part D.
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.
108 physician assistant records list a Fredericksburg practice address
They are 108 of the 3,696 NPPES records with a Fredericksburg practice address, and 4,003 physician assistant records in Virginia.
All 108 in Fredericksburg → All 4,003 in Virginia → Every provider in Fredericksburg →
Other physician assistant records in Virginia
- Tehreem AbbasWoodbridge, VA1083416937
- Emma AbbottRoanoke, VA1235737891
- Annalyn Abcede, PAChesapeake, VA1821479544
- Dalia Abdalla, PA-CAldie, VA1861342677
- Hamdi Abdullahi, PA-CAlexandria, VA1407620750
- Daniel Abeel, P.A.-CFort Belvoir, VA1770503070
- Elizabeth AbelBlacksburg, VA1972380152
- Rachele Abel, PA-CNorfolk, VA1871361808
- Stephen AbercrombieRoanoke, VA1700455227
- Haven Abernathy, PACharlottesville, VA1316806219
Common questions
What is Michael Callahan's NPI number?
Michael Callahan's National Provider Identifier (NPI) is 1356979538, issued on Apr 1, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Michael Callahan located?
The NPPES record lists a practice address at 4600 Spotsylvania Pkwy, Fredericksburg, VA, 22408. Phone: (540) 498-4000. Providers update this record themselves, so call before visiting.
How can I verify Michael Callahan's license?
Search the Virginia board that licenses this profession; the NPPES record confirms identity only.
How much does Michael Callahan prescribe under Medicare Part D?
In 2024, Michael Callahan had 14 Medicare Part D claims; the average among physician assistant prescribers was 832. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.