John R. Hatzenbuehler, MD
Family Medicine Physician · South Portland, ME
John R. Hatzenbuehler, MD is a family medicine physician with a practice address in South Portland, Maine, and NPI 1699844365, issued on Nov 7, 2006. Check the license (Maine MD17466, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- John R. Hatzenbuehler
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- MD17466 ME
Self-reported in NPPES; status is on the state search - Practice location
- 100 Foden RD, East, South Portland, ME 04106
- Phone
- (207) 523-8500
- Enumerated
- Nov 7, 2006
- Record last updated
- Oct 29, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (207) 523-8591
- Medicaid IDs
- 30207627 NH
432651599 ME - Medicare enrollment
- Enrolled (PECOS I20170719003637); accepts Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 2004
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,172 in Maine → Look up another NPI →
Also registered at 100 Foden RD, East
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nathan Bankoff, M.D.Family Medicine Physician1295267094
- Fernando Barrera, M.D.Psychiatry Physician1023420221
- Erin Campbell, FNPFamily Nurse Practitioner1780393009
- Julia Fenton Schnee, LCSWClinical Social Worker1942455563
- Riley Goodrich, PA-CPhysician Assistant1346720653
- Jeffrey Grassmann, D.O.Family Medicine Physician1750580486
Verify John R. Hatzenbuehler in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license MD17466Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
34% more Medicare Part D claims than the average family medicine physician in 2024
4,742 Medicare Part D claims for 511 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. 249 claims were for opioids.
Most prescribed
- Atorvastatin Calcium237 claims
- Levothyroxine Sodium186 claims
- Rosuvastatin Calcium155 claims
- Losartan Potassium149 claims
- Amlodipine Besylate141 claims
- Tamsulosin Hcl114 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
- St Lukes Clinic - Wood River LLCKetchum, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John R. Hatzenbuehler among 1,172 family medicine physician records in Maine
John R. Hatzenbuehler, MD is one of 1,172 family medicine physician records with a practice address in Maine. 76% 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 6% of them.
- NPI issued2006 · 6% of these records are older, 52% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2004 · median 2008 among the 668 with a school on file
- Record last updated2015 · 60% 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 Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
31 family medicine physician records list a practice address in South Portland
They are 31 of the 1,143 NPPES records with a practice address in South Portland, and 1,172 family medicine physician records in Maine.
All 1,172 in Maine → Every provider in South Portland → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Matthew Belcher, MDSouth Portland, ME 041061952351223
- Stephen Blair, D.O.South Portland, ME 041061992730311
- Morgen Buehner, MDSo Portland, ME 041061346315637
- Michael Ciampi, M.D.South Portland, ME 041061205862760
- Mary Connolly, MDSouth Portland, ME 041061558535559
- Megan Driscoll, MDSouth Portland, ME 041061265482152
- Jeffrey Grassmann, D.O.South Portland, ME 041061750580486
- John Kazilionis, DOSouth Portland, ME 041061114941937
Common questions
What is John R. Hatzenbuehler, MD's NPI number?
John R. Hatzenbuehler, MD's National Provider Identifier (NPI) is 1699844365, issued on Nov 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John R. Hatzenbuehler, MD located?
The NPPES record lists a practice address at 100 Foden RD, East, South Portland, ME, 04106. Phone: (207) 523-8500. Providers update this record themselves, so call before visiting.
How can I verify John R. Hatzenbuehler, MD's license?
NPPES lists Maine license number MD17466, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John R. Hatzenbuehler, MD prescribe under Medicare Part D?
In 2024, John R. Hatzenbuehler, MD had 4,742 Medicare Part D claims for 511 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.