NPPES file of Aug 9, 2026

Carolyn H. Ahn, FNP

Internal Medicine Physician · Plano, TX

Carolyn H. Ahn, FNP is an internal medicine physician with a practice address in Plano, Texas, and NPI 1033754098, issued on Nov 14, 2019. Check the license (Texas AP143437, 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 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1033754098
Name
Carolyn H. Ahn
Credential
FNP
Primary taxonomy
Internal Medicine Physician 207R00000X
License number
AP143437 TX
Self-reported in NPPES; status is on the state search
Practice location
5941 Dallas Pkwy, Plano, TX 75093
Phone
(972) 758-4455
Enumerated
Nov 14, 2019
Record last updated
Feb 5, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(972) 758-4433
Medicare enrollment
Enrolled (PECOS I20220131001394); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
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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8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →

Also registered at 5941 Dallas Pkwy

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

  1. Marriam Ali, M.D.Endocrinology, Diabetes & Metabolism Physician1700296191
  2. Ladan Bakhtari, M.D.Internal Medicine Physician1275602799
  3. Linda Bang, M.D.Internal Medicine Physician1447243688
  4. Sydney Beavers, PAPhysician Assistant1467108902
  5. Brinton CoombsPhysician Assistant1639997794
  6. Edward Corbett, M.DInternal Medicine Physician1487724753

Verify Carolyn H. Ahn in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license AP143437    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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54% fewer Medicare Part D claims than the average internal medicine physician in 2024

1,464 Medicare Part D claims for 202 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.

  1. Carolyn Ahn1,464
  2. Specialty average3,176

Most prescribed

  1. Rosuvastatin Calcium162 claims
  2. Levothyroxine Sodium58 claims
  3. Amlodipine Besylate56 claims
  4. Ezetimibe50 claims
  5. Metformin Hcl Er47 claims
  6. Metoprolol Succinate43 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.

Industry payments in 2024: $1,363.87

71 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk 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.

  1. Carolyn Ahn$1,363.87
  2. Specialty average$1,303.06

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. Doctors OF Internal Medicine PAPlano, TX

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

Carolyn H. Ahn among 9,175 internal medicine physician records in Texas

Carolyn H. Ahn, FNP is one of 9,175 internal medicine physician records with a practice address in Texas. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 82% of them.

  • NPI issued2019 · 82% of these records are older, 15% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 66% of these records are
  • Graduated2019 · median 2004 among the 6,088 with a school on file
  • Record last updated2020 · 49% 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 Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

205 internal medicine physician records list a practice address in Plano

They are 205 of the 7,271 NPPES records with a practice address in Plano, and 9,175 internal medicine physician records in Texas.

All 9,175 in Texas → Every provider in Plano → Internal Medicine Physician nationwide →

The 8 internal medicine physician records with the nearest ZIP codes

  1. Linda Bang, M.D.Plano, TX 750931447243688
  2. Odette Campbell, M.D.Plano, TX 750931114989092
  3. Kimberly Crawford, MDPlano, TX 750931417926783
  4. Marie Dinh, M.D.Plano, TX 750931477518769
  5. Trung Duong, M.D.Plano, TX 750931841269578
  6. Safoora Harandi, M.D.Plano, TX 750931134126691
  7. Linda Krisik, M.D.Plano, TX 750931992782338
  8. Darius Peikari, MDPlano, TX 750931275590077

Common questions

What is Carolyn H. Ahn, FNP's NPI number?

Carolyn H. Ahn, FNP's National Provider Identifier (NPI) is 1033754098, issued on Nov 14, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Carolyn H. Ahn, FNP located?

The NPPES record lists a practice address at 5941 Dallas Pkwy, Plano, TX, 75093. Phone: (972) 758-4455. Providers update this record themselves, so call before visiting.

How can I verify Carolyn H. Ahn, FNP's license?

NPPES lists Texas license number AP143437, 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 Carolyn H. Ahn, FNP prescribe under Medicare Part D?

In 2024, Carolyn H. Ahn, FNP had 1,464 Medicare Part D claims for 202 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.