John Thomas Zimmermann, M.D.
Medical Oncology Physician · Palmer, AK
John Thomas Zimmermann, M.D. is a medical oncology physician with a practice address in Palmer, Alaska, and NPI 1740221225, issued on Jun 8, 2006. Check the license (Alaska 7196, as entered in NPPES) on the Alaska State Medical Board; the Medicare figures below come from public CMS files.
- Name
- John Thomas Zimmermann
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License numbers
- 7196 AK
054141 GA
Self-reported in NPPES; status is on the state search - Practice location
- 2490 S Woodworth Loop, Palmer, AK 99645
- Phone
- (907) 746-7771
- Enumerated
- Jun 8, 2006
- Record last updated
- Dec 31, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (907) 746-7798
- Medicaid ID
- 300045082A GA
- Medicare enrollment
- Enrolled (PECOS I20200819004175); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
2 nearest medical oncology physician records → All 3 in Alaska → Look up another NPI →
Also registered at 2490 S Woodworth Loop
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Megan Ferguson, CNMAdvanced Practice Midwife1487017877
- Stacey Hayward, NPNurse Practitioner1942236054
- Brianna Nye, PA-CPhysician Assistant1972842326
- Andrew Pulliam, M.D.Otolaryngology/Facial Plastic Surgery Physician1134160120
- Sharon Schaefer, MDSurgery Physician1932157245
- Suesue ScottNurse Practitioner1871208389
Verify John Thomas Zimmermann in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersAlaska State Medical Board
Search for license 7196Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
5% more Medicare Part D claims than the average medical oncology physician in 2024
735 Medicare Part D claims for 116 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 79 claims were for opioids.
Most prescribed
- Anastrozole92 claims
- Ondansetron Odt35 claims
- Letrozole33 claims
- Oxycodone Hcl29 claims
- Dexamethasone28 claims
- Xtandi25 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: $1,562.50
27 payments; by number, the most common kind was food and beverage; the largest payer was Janssen Biotech, Inc. The 3,343 providers of this specialty with any payment received $11,773.47 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 one group practice
- Rocky Mountain Oncology Center LLCLander, WY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Medical Oncology Physician providers in Alaska
There are 3 medical oncology physician records in Alaska.
All 3 in Alaska → Every provider in Palmer → Medical Oncology Physician nationwide →
The 2 medical oncology physician records with the nearest ZIP codes
- Lawrence Lawson, M.D.Palmer, AK 996451740243914
- Yifan Pang, MDAnchorage, AK 995081952758435
Common questions
What is John Thomas Zimmermann, M.D.'s NPI number?
John Thomas Zimmermann, M.D.'s National Provider Identifier (NPI) is 1740221225, issued on Jun 8, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Thomas Zimmermann, M.D. located?
The NPPES record lists a practice address at 2490 S Woodworth Loop, Palmer, AK, 99645. Phone: (907) 746-7771. Providers update this record themselves, so call before visiting.
How can I verify John Thomas Zimmermann, M.D.'s license?
NPPES lists Alaska license number 7196, as entered by the provider. Search the Alaska State Medical Board at https://www.commerce.alaska.gov/web/cbpl/ProfessionalLicensing/StateMedicalBoard.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John Thomas Zimmermann, M.D. prescribe under Medicare Part D?
In 2024, John Thomas Zimmermann, M.D. had 735 Medicare Part D claims for 116 beneficiaries; the average among medical oncology physician prescribers was 703. 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.