NPPES file of Aug 9, 2026

T Lynn Warthan, MD

Dermatology Physician · Nacogdoches, TX

T Lynn Warthan, MD is a dermatology physician with a practice address in Nacogdoches, Texas, and NPI 1679647317, issued on Nov 17, 2006. Check the license (Texas D8472, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1679647317
Name
T Lynn Warthan
Credential
MD
Primary taxonomy
Dermatology Physician 207N00000X
License number
D8472 TX
Self-reported in NPPES; status is on the state search
Practice location
4730 NE Stallings Drive, Nacogdoches, TX 75965
Phone
(936) 564-6107
Enumerated
Nov 17, 2006
Record last updated
Mar 18, 2014 (not updated in 12 years: call before relying on the address or phone)
Fax
(936) 564-5124
Medicare enrollment
Enrolled (PECOS I20100913000361); accepts Medicare assignment
Medical or professional school
University Of Texas Medical Branch At Galveston, 1971
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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Verify T Lynn Warthan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license D8472
    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 Texas license search

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73% fewer Medicare Part D claims than the average dermatology physician in 2024

218 Medicare Part D claims for 114 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D.

  1. T Warthan218
  2. Specialty average797

Most prescribed

  1. Triamcinolone Acetonide42 claims
  2. Clobetasol Propionate28 claims
  3. Ketoconazole19 claims
  4. Cephalexin16 claims
  5. Ciclopirox13 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): 88 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 score86.7
  2. Costout of 100 · 30%99.8
  3. Promoting interoperabilityout of 100 · 25%68.0
  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).

Industry payments in 2024: $167.72

8 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. T Warthan$167.72
  2. Specialty average$8,544.61

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

  1. Warthan Dermatology Nacogdoches PLLCNacogdoches, TX

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

T Lynn Warthan among 1,172 dermatology physician records in Texas

T Lynn Warthan, MD is one of 1,172 dermatology physician records with a practice address in Texas. 88% 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 10% of them.

  • NPI issued2006 · 10% of these records are older, 63% newer
  • In a Medicare fileYes · 88% of these records are
  • In the CMS Doctors and Clinicians fileYes · 79% of these records are
  • Graduated1971 · median 2008 among the 926 with a school on file
  • Record last updated2014 · 48% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Dermatology Physician providers in Texas

There are 1,172 dermatology physician records in Texas.

The 8 dermatology physician records with the nearest ZIP codes

  1. Michaela Overturf, MDNacogdoches, TX 759651144514803
  2. Victoria Serralta, MDArlington, TX 760011154366870
  3. Alexander Berlin, MDArlington, TX 760121053499301
  4. Stephen Gano, MDArlington, TX 760121962402040
  5. Jun Long, MD, PHDArlington, TX 760121053992495
  6. Milton Mullanax, M.D.Arlington, TX 760121700932076
  7. Tri Nguyen, M.D.Arlington, TX 760121003952086
  8. Edward Rotan, M.D.Arlington, TX 760121780734582

Common questions

What is T Lynn Warthan, MD's NPI number?

T Lynn Warthan, MD's National Provider Identifier (NPI) is 1679647317, issued on Nov 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is T Lynn Warthan, MD located?

The NPPES record lists a practice address at 4730 NE Stallings Drive, Nacogdoches, TX, 75965. Phone: (936) 564-6107. Providers update this record themselves, so call before visiting.

How can I verify T Lynn Warthan, MD's license?

NPPES lists Texas license number D8472, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does T Lynn Warthan, MD prescribe under Medicare Part D?

In 2024, T Lynn Warthan, MD had 218 Medicare Part D claims for 114 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.

What is T Lynn Warthan, MD's MIPS final score?

The 2023 MIPS final score is 88 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.