Stephen L. Thomas, M.D.
Internal Medicine Physician · Mesa, AZ
Stephen L. Thomas, M.D. is an internal medicine physician with a practice address in Mesa, Arizona, and NPI 1508849985, issued on Nov 21, 2005. Check the license (Arizona 27161, as entered in NPPES) on the Arizona Medical Board; the Medicare figures below come from public CMS files.
- Name
- Stephen L. Thomas
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 27161 AZ
Self-reported in NPPES; status is on the state search - Practice location
- 6112 E Brown RD, Mesa, AZ 85205
- Phone
- (480) 924-4422
- Enumerated
- Nov 21, 2005
- Record last updated
- Oct 26, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (480) 924-8822
- Medicaid ID
- 475295 AZ
- Medicare enrollment
- Enrolled (PECOS I20100118000266); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,853 in Arizona → Look up another NPI →
Also registered at 6112 E Brown RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ryan Alexander, PA-CFamily Medicine Physician1710604798
- Amanda Barrett, PAMedical Physician Assistant1144349648
- Stephen Baurichter, PTPhysical Therapist1124358890
- Melynda Buell, PA-CFamily Medicine Physician1578848040
- Kerry Green, M.D.Family Medicine Physician1801835350
- Jared Gunnell, PA-CPhysician Assistant1366791873
Verify Stephen L. Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersArizona Medical Board
Search for license 27161Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.6 times the Medicare Part D claims of the average internal medicine physician in 2024
11,405 Medicare Part D claims for 1,080 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 117 claims were for opioids.
Most prescribed
- Atorvastatin Calcium973 claims
- Levothyroxine Sodium783 claims
- Amlodipine Besylate589 claims
- Losartan Potassium503 claims
- Lisinopril435 claims
- Metformin Hcl406 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $143.23
7 payments; by number, the most common kind was food and beverage; the largest payer was Dexcom, Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Kerry S Green MD PLCMesa, AZ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Stephen L. Thomas among 2,853 internal medicine physician records in Arizona
Stephen L. Thomas, M.D. is one of 2,853 internal medicine physician records with a practice address in Arizona. 75% 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, 87% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Record last updated2011 · 51% 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 Arizona practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
157 internal medicine physician records list a practice address in Mesa
They are 157 of the 9,151 NPPES records with a practice address in Mesa, and 2,853 internal medicine physician records in Arizona.
All 2,853 in Arizona → Every provider in Mesa → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Muhammad Alam, MDMesa, AZ 852051891829057
- Richard Fowler, MDMesa, AZ 852051316923584
- Anne Hawkins, M.D.Mesa, AZ 852051801845755
- Iram Khan, M.D.Mesa, AZ 852051740487719
- Shu Ting Kung, M.D.Mesa, AZ 852051053706705
- Armando Rodriguez-Asbun, MDMesa, AZ 852051679561203
- Mahmood Shahlapour, M.D.Mesa, AZ 852051336106152
- Gregg Smith, D.O.Mesa, AZ 852051003803925
Common questions
What is Stephen L. Thomas, M.D.'s NPI number?
Stephen L. Thomas, M.D.'s National Provider Identifier (NPI) is 1508849985, issued on Nov 21, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Stephen L. Thomas, M.D. located?
The NPPES record lists a practice address at 6112 E Brown RD, Mesa, AZ, 85205. Phone: (480) 924-4422. Providers update this record themselves, so call before visiting.
How can I verify Stephen L. Thomas, M.D.'s license?
NPPES lists Arizona license number 27161, as entered by the provider. Search the Arizona Medical Board at https://www.azmd.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Stephen L. Thomas, M.D. prescribe under Medicare Part D?
In 2024, Stephen L. Thomas, M.D. had 11,405 Medicare Part D claims for 1,080 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Stephen L. Thomas, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.