Gregory Grunwald, DO
Internal Medicine Physician · Medford, OR
Gregory Grunwald, DO is an internal medicine physician with a practice address in Medford, Oregon, and NPI 1215998679, issued on Mar 28, 2006. Check the license (Oregon DO22277, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gregory Grunwald
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- DO22277 OR
Self-reported in NPPES; status is on the state search - Practice location
- 2380 W Main St Ste A, Medford, OR 97501
- Phone
- (541) 858-7183
- Enumerated
- Mar 28, 2006
- Record last updated
- Sep 23, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicaid ID
- 138021 OR
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Verify Gregory Grunwald in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license DO22277Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% more Medicare Part D claims than the average internal medicine physician in 2024
6,204 Medicare Part D claims for 369 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 319 claims were for opioids.
Most prescribed
- Atorvastatin Calcium437 claims
- Lisinopril326 claims
- Levothyroxine Sodium227 claims
- Omeprazole197 claims
- Amlodipine Besylate195 claims
- Metformin Hcl195 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: $18.85
1 payment: food and beverage; the largest payer was Tactile Systems Technology Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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.
Gregory Grunwald among 2,116 internal medicine physician records in Oregon
Gregory Grunwald, DO is one of 2,116 internal medicine physician records with a practice address in Oregon. 73% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 54% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2010 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
56 internal medicine physician records list a practice address in Medford
They are 56 of the 4,542 NPPES records with a practice address in Medford, and 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Medford → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Robert Blanche, M.D.Medford, OR 975011477567659
- Heidi Jacobson, MDMedford, OR 975011689654022
- Thomas Margulies, M.D.Medford, OR 975011477575835
- Sara Walz, M.D.Medford, OR 975011154687259
- Christopher Alftine, MDCentral Point, OR 975021073510483
- Susan Hansen, MDCentral Point, OR 975021730129909
- John Kolsbun, MDCentral Point, OR 975021669461125
- Daniel Wood, DOCentral Point, OR 975021225778855
Common questions
What is Gregory Grunwald, DO's NPI number?
Gregory Grunwald, DO's National Provider Identifier (NPI) is 1215998679, issued on Mar 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gregory Grunwald, DO located?
The NPPES record lists a practice address at 2380 W Main St Ste A, Medford, OR, 97501. Phone: (541) 858-7183. Providers update this record themselves, so call before visiting.
How can I verify Gregory Grunwald, DO's license?
NPPES lists Oregon license number DO22277, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gregory Grunwald, DO prescribe under Medicare Part D?
In 2024, Gregory Grunwald, DO had 6,204 Medicare Part D claims for 369 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.