Narain K. Kumar, M.D.
Internal Medicine Physician · Portland, OR
Narain K. Kumar, M.D. is an internal medicine physician with a practice address in Portland, Oregon, and NPI 1467770982, issued on May 7, 2010. Check the license (Oregon 164753, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Narain K. Kumar
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- 164753 OR
MD2013-0910 NM
Self-reported in NPPES; status is on the state search - Practice location
- 10300 NE Hancock St, Portland, OR 97220
- Phone
- (503) 257-5833
- Enumerated
- May 7, 2010
- Record last updated
- Mar 25, 2026
- Medicare enrollment
- Enrolled (PECOS I20250505001360); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,116 in Oregon → Look up another NPI →
Also registered at 10300 NE Hancock St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Emese Dunai, OTROccupational Therapist1700044138
- Richard Gicking, MDInternal Medicine Physician1477524338
- Bri'Enne Greenwell, OTROccupational Therapist1023353968
Verify Narain K. Kumar in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license 164753Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average internal medicine physician in 2024
237 Medicare Part D claims for 80 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Cefdinir13 claims
- Furosemide13 claims
- Prednisone13 claims
- Amoxicillin-Clavulanate Potass11 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 2 group practices
- Hospital Physician Services - Southeast Professional CorporationSnellville, GA
- San Juan Regional Medical Center, Inc.Farmington, NM
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Narain K. Kumar among 2,116 internal medicine physician records in Oregon
Narain K. Kumar, M.D. 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 2010, is newer than 62% of them.
- NPI issued2010 · 62% of these records are older, 35% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2010 · median 2008 among the 1,232 with a school on file
- Record last updated2026 · 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).
889 internal medicine physician records list a practice address in Portland
They are 889 of the 42,088 NPPES records with a practice address in Portland, and 2,116 internal medicine physician records in Oregon.
All 2,116 in Oregon → Every provider in Portland → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Soraya Abbassian, M.D.Portland, OR 972201225029184
- Mahnaz Ahmad, M.D.Portland, OR 972201124046727
- Michael Bower, MDPortland, OR 972201700814936
- Kay Gates, MDPortland, OR 972201437194891
- Richard Gicking, MDPortland, OR 972201477524338
- Richard Hsu, MDPortland, OR 972201174552491
- Linda Hungerford, MDPortland, OR 972201902832363
- Jennifer Lin, MDPortland, OR 972201114996485
Common questions
What is Narain K. Kumar, M.D.'s NPI number?
Narain K. Kumar, M.D.'s National Provider Identifier (NPI) is 1467770982, issued on May 7, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Narain K. Kumar, M.D. located?
The NPPES record lists a practice address at 10300 NE Hancock St, Portland, OR, 97220. Phone: (503) 257-5833. Providers update this record themselves, so call before visiting.
How can I verify Narain K. Kumar, M.D.'s license?
NPPES lists Oregon license number 164753, 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 Narain K. Kumar, M.D. prescribe under Medicare Part D?
In 2024, Narain K. Kumar, M.D. had 237 Medicare Part D claims for 80 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.