John R. Treer, MD
Internal Medicine Physician · Frisco, TX
John R. Treer, MD is an internal medicine physician with a practice address in Frisco, Texas, and NPI 1972521110, issued on Jul 17, 2006. Check the license (Texas K5418, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- John R. Treer
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- K5418 TX
Self-reported in NPPES; status is on the state search - Practice location
- 12950 Dallas Pkwy Ste 100, Frisco, TX 75033
- Phone
- (972) 377-8695
- Enumerated
- Jul 17, 2006
- Record last updated
- Sep 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (972) 377-8699
- Medicaid IDs
- 144874803 TX
144874806 TX - Medicare enrollment
- Enrolled (PECOS I20050815000306); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 1997
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 9,175 in Texas → Look up another NPI →
Also registered at 12950 Dallas Pkwy Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Michael Lee, MDInternal Medicine Physician1447351622
- Sonyta So, PAPhysician Assistant1386983898
Verify John R. Treer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license K5418Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.7 times the Medicare Part D claims of the average internal medicine physician in 2024
8,725 Medicare Part D claims for 878 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 97 claims were for opioids.
Most prescribed
- Atorvastatin Calcium544 claims
- Rosuvastatin Calcium476 claims
- Levothyroxine Sodium441 claims
- Lisinopril365 claims
- Amlodipine Besylate350 claims
- Losartan Potassium248 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: $1,250.52
66 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.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Legacy Healthcare Services IncLewisville, TX
- Texas Health Physicians GroupFrisco, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John R. Treer among 9,175 internal medicine physician records in Texas
John R. Treer, MD 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 2006, is newer than 9% of them.
- NPI issued2006 · 9% of these records are older, 59% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1997 · median 2004 among the 6,088 with a school on file
- Record last updated2021 · 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).
78 internal medicine physician records list a practice address in Frisco
They are 78 of the 4,217 NPPES records with a practice address in Frisco, and 9,175 internal medicine physician records in Texas.
All 9,175 in Texas → Every provider in Frisco → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Humera Ahmed, MDFrisco, TX 750331326268400
- Ramesh Amara, MDFrisco, TX 750331104892959
- Vini Bapna, M.D.Frisco, TX 750331912116708
- Stephanie Berg, MDFrisco, TX 750331629047659
- Dina Diehl, D.O.Frisco, TX 750331083732812
- Bryan Johnson, MDFrisco, TX 750331154340925
- Suchitra Kamineni, MDFrisco, TX 750331851548622
- Vijay Katari, MDFrisco, TX 750331184734733
Common questions
What is John R. Treer, MD's NPI number?
John R. Treer, MD's National Provider Identifier (NPI) is 1972521110, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John R. Treer, MD located?
The NPPES record lists a practice address at 12950 Dallas Pkwy Ste 100, Frisco, TX, 75033. Phone: (972) 377-8695. Providers update this record themselves, so call before visiting.
How can I verify John R. Treer, MD's license?
NPPES lists Texas license number K5418, 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 John R. Treer, MD prescribe under Medicare Part D?
In 2024, John R. Treer, MD had 8,725 Medicare Part D claims for 878 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.
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.