James Frederick Havemann, M.D.
Family Medicine Physician · Grapevine, TX
James Frederick Havemann, M.D. is a family medicine physician with a practice address in Grapevine, Texas, and NPI 1366460479, issued on Jul 17, 2006. Check the license (Texas L8726, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- James Frederick Havemann
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- L8726 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1280 S Main St Ste 100, Grapevine, TX 76051
- Phone
- (469) 495-9018
- Enumerated
- Jul 17, 2006
- Record last updated
- Jan 27, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 166615801 TX
- Medicare enrollment
- Enrolled (PECOS I20040615001075); accepts Medicare assignment
- Medical or professional school
- University Of Texas Southwestern Medical School At Dallas, 2001
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 11,119 in Texas → Look up another NPI →
Also registered at 1280 S Main St Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashley Fagan, DOInternal Medicine Physician1033423496
- Sarah Groce, PA-CPhysician Assistant1801929443
- Ashley Hall, PAPhysician Assistant1306285804
- Chad Hogan, MDFamily Medicine Physician1235187279
- Shana John, PAPhysician Assistant1669905436
- Christian Reisch, PA-CPhysician Assistant1568932267
Verify James Frederick Havemann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license L8726Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% fewer Medicare Part D claims than the average family medicine physician in 2024
2,449 Medicare Part D claims for 204 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims.
Most prescribed
- Atorvastatin Calcium226 claims
- Amlodipine Besylate152 claims
- Rosuvastatin Calcium148 claims
- Levothyroxine Sodium133 claims
- Losartan Potassium118 claims
- Metoprolol Succinate78 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.
Bills Medicare through one group practice
- Texas Health Physicians GroupGrapevine, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James Frederick Havemann among 11,119 family medicine physician records in Texas
James Frederick Havemann, M.D. is one of 11,119 family 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 12% of them.
- NPI issued2006 · 12% of these records are older, 54% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated2001 · median 2004 among the 7,095 with a school on file
- Record last updated2021 · 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 207Q00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
33 family medicine physician records list a practice address in Grapevine
They are 33 of the 1,104 NPPES records with a practice address in Grapevine, and 11,119 family medicine physician records in Texas.
All 11,119 in Texas → Every provider in Grapevine → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Carleo Capili, MDGrapevine, TX 760511255350112
- Amy Depue, D.O.Grapevine, TX 760511831131127
- Eric Futscher, MDGrapevine, TX 760511245267764
- Lee Haak, MDGrapevine, TX 760511104803923
- Tod Heldridge, M.D.Grapevine, TX 760511336185875
- Chad Hogan, MDGrapevine, TX 760511235187279
- Huned Husain, M.D.Grapevine, TX 760511679535645
- Thomas McIntosh, MDGrapevine, TX 760511942226535
Common questions
What is James Frederick Havemann, M.D.'s NPI number?
James Frederick Havemann, M.D.'s National Provider Identifier (NPI) is 1366460479, issued on Jul 17, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James Frederick Havemann, M.D. located?
The NPPES record lists a practice address at 1280 S Main St Ste 100, Grapevine, TX, 76051. Phone: (469) 495-9018. Providers update this record themselves, so call before visiting.
How can I verify James Frederick Havemann, M.D.'s license?
NPPES lists Texas license number L8726, 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 James Frederick Havemann, M.D. prescribe under Medicare Part D?
In 2024, James Frederick Havemann, M.D. had 2,449 Medicare Part D claims for 204 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.