NPPES file of Aug 9, 2026

Gregory Mark Chamberlin, MD

Anatomic Pathology & Clinical Pathology Physician · Memphis, TN

Gregory Mark Chamberlin, MD is an anatomic pathology & clinical pathology physician with a practice address in Memphis, Tennessee, and NPI 1861981250, issued on May 1, 2018. Check the license on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1861981250
Name
Gregory Mark Chamberlin
Credential
MD
Primary taxonomy
Anatomic Pathology & Clinical Pathology Physician 207ZP0102X
License numbers
35763 MS
2022-01454 NC
Self-reported in NPPES; status is on the state search
Practice location
6019 Walnut Grove RD, Memphis, TN 38120
Phone
(901) 227-5135
Enumerated
May 1, 2018
Record last updated
Aug 26, 2025
Medicare enrollment
Enrolled (PECOS I20250829000640); 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 6019 Walnut Grove RD

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

  1. James Acker, M.D.Diagnostic Radiology Physician1356391916
  2. Jaya Adabala, M.D.Internal Medicine Physician1063673119
  3. Alivia Adkins, MDInternal Medicine Physician1699262840
  4. Santiago Aguilar Duenas, MDInternal Medicine Physician1285897553
  5. Wissam Aldayoub, M.D.Internal Medicine Physician1881073625
  6. Hamda Almaazmi, MBBSVascular Surgery Physician1275192312

Verify Gregory Mark Chamberlin in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTennessee Board of Medical ExaminersCheck 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 Tennessee 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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Bills Medicare through one group practice

  1. Associated Pathologists, LLCWest Memphis, AR

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

Gregory Mark Chamberlin among 475 anatomic pathology & clinical pathology physician records in Tennessee

Gregory Mark Chamberlin, MD is one of 475 anatomic pathology & clinical pathology physician records with a practice address in Tennessee. 63% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 94% of them.

  • NPI issued2018 · 94% of these records are older, 4% newer
  • In a Medicare fileYes · 63% of these records are
  • In the CMS Doctors and Clinicians fileYes · 55% of these records are
  • Graduated2018 · median 2004 among the 259 with a school on file
  • Record last updated2025 · 64% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZP0102X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anatomic Pathology & Clinical Pathology Physician providers in Tennessee

There are 475 anatomic pathology & clinical pathology physician records in Tennessee.

The 8 anatomic pathology & clinical pathology physician records with the nearest ZIP codes

  1. Charles Beavers, MDMemphis, TN 381201235371691
  2. Katelynn CampbellMemphis, TN 381201194108589
  3. Diana Castro Villabon, M.D.Memphis, TN 381201063826717
  4. Matthew Dress, M.D.Memphis, TN 381201538388012
  5. Andrew Golden, D.O.Memphis, TN 381201093058570
  6. Christopher Golembeski, MDMemphis, TN 381201447331897
  7. Daniel Hale, M.D.Memphis, TN 381201477972610
  8. Charles Newman, M.D.Memphis, TN 381201528472180

Common questions

What is Gregory Mark Chamberlin, MD's NPI number?

Gregory Mark Chamberlin, MD's National Provider Identifier (NPI) is 1861981250, issued on May 1, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Gregory Mark Chamberlin, MD located?

The NPPES record lists a practice address at 6019 Walnut Grove RD, Memphis, TN, 38120. Phone: (901) 227-5135. Providers update this record themselves, so call before visiting.

How can I verify Gregory Mark Chamberlin, MD's license?

Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.