NPPES file of Aug 9, 2026

Hassan R. Tahhan, MD

Clinical Pathology/Laboratory Medicine Physician · Norfolk, VA

Hassan R. Tahhan, MD is a clinical pathology/laboratory medicine physician with a practice address in Norfolk, Virginia, and NPI 1770541229, issued on May 3, 2006. Check the license (Virginia 0101049654, as entered in NPPES) on the Virginia Department of Health Professions; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1770541229
Name
Hassan R. Tahhan
Credential
MD
Primary taxonomy
Clinical Pathology/Laboratory Medicine Physician 207ZP0105X
License number
0101049654 VA
Self-reported in NPPES; status is on the state search
Practice location
600 Gresham Dr, Norfolk, VA 23507
Phone
(757) 388-3221
Enumerated
May 3, 2006
Record last updated
Sep 25, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(757) 388-3799
Medicaid ID
1770541229 VA
Medicare enrollment
Enrolled (PECOS I20180806001209); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 600 Gresham Dr

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Rachele Abel, PA-CPhysician Assistant1871361808
  2. Marc Abrams, MDAnesthesiology Physician1144249244
  3. Nevin Adamski, MDStudent in an Organized Health Care Education/Training Program1144070640
  4. Aderonke AdemolaGerontology Nurse Practitioner1336955814
  5. Arslan Ahmad, MDAnatomic Pathology & Clinical Pathology Physician1104200591
  6. Pranay Shah Ajay, MDStudent in an Organized Health Care Education/Training Program1265127104

Verify Hassan R. Tahhan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersVirginia Department of Health Professions
    Search for license 0101049654
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Virginia license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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The practice group's MIPS final score for 2023 (Medicare payment program): 84.9 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score80.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Bills Medicare through one group practice

  1. Pathology Sciences Medical Group PCElizabeth City, NC

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Hassan R. Tahhan among 14 clinical pathology/laboratory medicine physician records in Virginia

Hassan R. Tahhan, MD is one of 14 clinical pathology/laboratory medicine physician records with a practice address in Virginia. 43% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 43% of them.

  • NPI issued2006 · 43% of these records are older, 36% newer
  • In a Medicare fileYes · 43% of these records are
  • In the CMS Doctors and Clinicians fileYes · 36% of these records are
  • Record last updated2014 · 50% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0105X and a Virginia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Pathology/Laboratory Medicine Physician providers in Virginia

There are 14 clinical pathology/laboratory medicine physician records in Virginia.

The 8 clinical pathology/laboratory medicine physician records with the nearest ZIP codes

  1. Lou Ann MaesNorfolk, VA 235101851303317
  2. Marie Do, MDRichmond, VA 232981710198197
  3. Mary Padilla, M.D.Richmond, VA 232351205059359
  4. Junqi Qian, MDRichmond, VA 232351407176969
  5. Pamela Clark, M.D.Charlottesville, VA 229081306866264
  6. James Henry, MDSalem, VA 241531619954351
  7. Ralph Desimone, M.D.Culpeper, VA 227011629067491
  8. Catherine Mathieu, M.D.Winchester, VA 226011447249057

Common questions

What is Hassan R. Tahhan, MD's NPI number?

Hassan R. Tahhan, MD's National Provider Identifier (NPI) is 1770541229, issued on May 3, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Hassan R. Tahhan, MD located?

The NPPES record lists a practice address at 600 Gresham Dr, Norfolk, VA, 23507. Phone: (757) 388-3221. Providers update this record themselves, so call before visiting.

How can I verify Hassan R. Tahhan, MD's license?

NPPES lists Virginia license number 0101049654, 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.

What is Hassan R. Tahhan, MD's MIPS final score?

The 2023 MIPS final score is 84.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.