Nathan Heflin Massey, M.D.
Gastroenterology Physician · Lexington, KY
Nathan Heflin Massey, M.D. is a gastroenterology physician with a practice address in Lexington, Kentucky, and NPI 1891865135, issued on Nov 8, 2006. Check the license (Kentucky 34945, as entered in NPPES) on the Kentucky Board of Medical Licensure; the Medicare figures below come from public CMS files.
- Name
- Nathan Heflin Massey
- Credential
- M.D.
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 34945 KY
Self-reported in NPPES; status is on the state search - Practice location
- 2620 Wilhite Dr, Lexington, KY 40503
- Phone
- (859) 278-6031
- Enumerated
- Nov 8, 2006
- Record last updated
- Feb 23, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (859) 277-7015
- Medicaid ID
- 64060999 KY
- Medicare enrollment
- Enrolled (PECOS I20090921000281); accepts Medicare assignment
- Medical or professional school
- University Of Kentucky College Of Medicine, 1996
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 226 in Kentucky → Look up another NPI →
Also registered at 2620 Wilhite Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kela Barker, M.S., CCC/SLPSpeech-Language Pathologist1316048663
- Bruce Belin, MDColon & Rectal Surgery Physician1891790697
- Amy Camenisch, MS, RD, LDRegistered Dietitian1679990246
- Bailey ColemanCertified Registered Nurse Anesthetist1619603560
- Sarah Crain, MS, CCC/SLPSpeech-Language Pathologist1275624322
- John Dvorak, MDColon & Rectal Surgery Physician1902807985
Verify Nathan Heflin Massey in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersKentucky Board of Medical Licensure
Search for license 34945Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.5 times the Medicare Part D claims of the average gastroenterology physician in 2024
2,807 Medicare Part D claims for 811 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 17% of claims.
Most prescribed
- Omeprazole561 claims
- Pantoprazole Sodium346 claims
- Esomeprazole Magnesium283 claims
- Sod Sulf-Potass Sulf-Mag Sulf265 claims
- Colestipol Hcl102 claims
- Creon99 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 87.5 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.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $618.88
24 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 13,350 providers of this specialty with any payment received $5,015.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Colorectal Surgical And Gastroenterology Associates PscLexington, KY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nathan Heflin Massey among 226 gastroenterology physician records in Kentucky
Nathan Heflin Massey, M.D. is one of 226 gastroenterology physician records with a practice address in Kentucky. 89% 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 18% of them.
- NPI issued2006 · 18% of these records are older, 47% newer
- In a Medicare fileYes · 89% of these records are
- In the CMS Doctors and Clinicians fileYes · 80% of these records are
- Graduated1996 · median 2000 among the 181 with a school on file
- Record last updated2011 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a Kentucky practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in Kentucky
There are 226 gastroenterology physician records in Kentucky.
All 226 in Kentucky → Every provider in Lexington → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Adalberto Castellanos, M.D.Lexington, KY 405031639198385
- Warren Frank, MDLexington, KY 405031881656445
- Victor Howard, M.D.Lexington, KY 405031740573286
- James Pezzi, M.D.Lexington, KY 405031053339119
- Brooks Richardson, MDLexington, KY 405031518490341
- Stephen Schindler, M.D.Lexington, KY 405031154490852
- Stephen Schindler, M.D.Lexington, KY 405031780753152
- Gregory Woolfolk, MDLexington, KY 405031881678324
Common questions
What is Nathan Heflin Massey, M.D.'s NPI number?
Nathan Heflin Massey, M.D.'s National Provider Identifier (NPI) is 1891865135, issued on Nov 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nathan Heflin Massey, M.D. located?
The NPPES record lists a practice address at 2620 Wilhite Dr, Lexington, KY, 40503. Phone: (859) 278-6031. Providers update this record themselves, so call before visiting.
How can I verify Nathan Heflin Massey, M.D.'s license?
NPPES lists Kentucky license number 34945, as entered by the provider. Search the Kentucky Board of Medical Licensure at https://web1.ky.gov/GenSearch/LicenseSearch.aspx?AGY=5. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Nathan Heflin Massey, M.D. prescribe under Medicare Part D?
In 2024, Nathan Heflin Massey, M.D. had 2,807 Medicare Part D claims for 811 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Nathan Heflin Massey, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.5 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.