Ari D. Greenberg, PAC
Medical Physician Assistant · Billings, MT
Ari D. Greenberg, PAC is a medical physician assistant with a practice address in Billings, Montana, and NPI 1841465267, issued on Apr 26, 2008. Check the license (Montana 313, as entered in NPPES) with the Montana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Ari D. Greenberg
- Credential
- PAC
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- 313 MT
Self-reported in NPPES; status is on the state search - Practice location
- 2900 12TH Ave N, Billings, MT 59101
- Phone
- (406) 237-5862
- Enumerated
- Apr 26, 2008
- Record last updated
- Apr 26, 2008 (not updated in 18 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 269 in Montana → Look up another NPI →
Also registered at 2900 12TH Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ari D. Greenberg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Montana board licenses this profession
Search for license 313Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $15.19
1 payment: food and beverage; the largest payer was Braeburn Inc. The 16,165 providers of this specialty with any payment received $1,055.00 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.
Ari D. Greenberg among 269 medical physician assistant records in Montana
Ari D. Greenberg, PAC is one of 269 medical physician assistant records with a practice address in Montana. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 43% of them.
- NPI issued2008 · 43% of these records are older, 53% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2008 · 40% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Montana practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
54 medical physician assistant records list a practice address in Billings
They are 54 of the 4,035 NPPES records with a practice address in Billings, and 269 medical physician assistant records in Montana.
All 269 in Montana → Every provider in Billings → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Jessica Amsden, PACBillings, MT 591011053351411
- Kate Blakeslee, PABillings, MT 591011942530001
- Beth Hamilton, PACBillings, MT 591011518069145
- Michael Hines, PACBillings, MT 591011205947397
- Trudy Koster, PABillings, MT 591011174546147
- Kristina Krieger, PA-CBillings, MT 591011225154313
- Jodee Macdonald Etchart, PA-CBillings, MT 591011568456044
- Richard Melzer, MDBillings, MT 591011407953086
Common questions
What is Ari D. Greenberg, PAC's NPI number?
Ari D. Greenberg, PAC's National Provider Identifier (NPI) is 1841465267, issued on Apr 26, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Ari D. Greenberg, PAC located?
The NPPES record lists a practice address at 2900 12TH Ave N, Billings, MT, 59101. Phone: (406) 237-5862. Providers update this record themselves, so call before visiting.
How can I verify Ari D. Greenberg, PAC's license?
NPPES lists Montana license number 313, as entered by the provider. Search the Montana board that licenses this profession; the NPPES record confirms identity 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.