Robert S. Wagenaar, MD
Family Medicine Physician · Billings, MT
Robert S. Wagenaar, MD is a family medicine physician with a practice address in Billings, Montana, and NPI 1841287570, issued on Sep 27, 2005. Check the license (Montana 9968, as entered in NPPES) on the Montana Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Robert S. Wagenaar
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 9968 MT
Self-reported in NPPES; status is on the state search - Practice location
- 2795 Enterprise Ave Ste 5, Billings, MT 59102
- Phone
- (406) 701-1111
- Enumerated
- Sep 27, 2005
- Record last updated
- Apr 17, 2024
- Fax
- (406) 578-1202
- Medicare enrollment
- Enrolled (PECOS I20141117001502); may accept Medicare assignment
- Medical or professional school
- University Of Washington School Of Medicine, 1999
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 775 in Montana → Look up another NPI →
Verify Robert S. Wagenaar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMontana Board of Medical Examiners
Search for license 9968Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
97% fewer Medicare Part D claims than the average family medicine physician in 2024
91 Medicare Part D claims for 49 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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: $152.46
4 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 55,478 providers of this specialty with any payment received $902.55 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.
Robert S. Wagenaar among 775 family medicine physician records in Montana
Robert S. Wagenaar, MD is one of 775 family medicine physician records with a practice address in Montana. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 91% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1999 · median 2007 among the 464 with a school on file
- Record last updated2024 · 53% 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 Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
111 family medicine physician records list a practice address in Billings
They are 111 of the 4,035 NPPES records with a practice address in Billings, and 775 family medicine physician records in Montana.
All 775 in Montana → Every provider in Billings → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jon Bullman, MDBillings, MT 591021255373411
- Shelly Castles, MDBillings, MT 591021952410953
- Heidi Duncan, MDBillings, MT 591021376645341
- Daniel Gall, MDBillings, MT 591021992817951
- Donald Grewell, DOBillings, MT 591021326150285
- Lawrence Hemmer, MDBillings, MT 591021073625463
- Vernon Johnson, MDBillings, MT 591021679568190
- James King, MDBillings, MT 591021174625271
Common questions
What is Robert S. Wagenaar, MD's NPI number?
Robert S. Wagenaar, MD's National Provider Identifier (NPI) is 1841287570, issued on Sep 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Robert S. Wagenaar, MD located?
The NPPES record lists a practice address at 2795 Enterprise Ave Ste 5, Billings, MT, 59102. Phone: (406) 701-1111. Providers update this record themselves, so call before visiting.
How can I verify Robert S. Wagenaar, MD's license?
NPPES lists Montana license number 9968, as entered by the provider. Search the Montana Board of Medical Examiners at https://ebiz.mt.gov/POL/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert S. Wagenaar, MD prescribe under Medicare Part D?
In 2024, Robert S. Wagenaar, MD had 91 Medicare Part D claims for 49 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.