Douglas P. Olson, M.D.
Internal Medicine Physician · New Haven, CT
Douglas P. Olson, M.D. is an internal medicine physician with a practice address in New Haven, Connecticut, and NPI 1972788792, issued on Dec 31, 2007. Check the license (Connecticut 048098, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Douglas P. Olson
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 048098 CT
Self-reported in NPPES; status is on the state search - Practice location
- 374 Grand Ave, New Haven, CT 06513
- Phone
- (203) 777-7411
- Enumerated
- Dec 31, 2007
- Record last updated
- Dec 1, 2025
- Medicare enrollment
- Enrolled (PECOS I20100726000177); accepts Medicare assignment
- Medical or professional school
- George Washington University School Of Medicine, 2007
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Also registered at 374 Grand Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Joel Bluman, MDFamily Medicine Physician1043855521
- Renu Boatright, M.D.Pediatrics Physician1407023252
Verify Douglas P. Olson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 048098Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,294 Medicare Part D claims for 84 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 32% of claims.
Most prescribed
- Biktarvy144 claims
- Rosuvastatin Calcium116 claims
- Dovato109 claims
- Lisinopril87 claims
- Atorvastatin Calcium74 claims
- Trazodone Hcl66 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: $148.37
6 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, 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.
Bills Medicare through 2 group practices
- Fair Haven Community Health Clinic IncNew Haven, CT
- Optimus Health Care IncBridgeport, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Douglas P. Olson among 2,623 internal medicine physician records in Connecticut
Douglas P. Olson, M.D. is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 48% of them.
- NPI issued2007 · 48% of these records are older, 44% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated2007 · median 2004 among the 1,646 with a school on file
- Record last updated2025 · 61% 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 Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
329 internal medicine physician records list a practice address in New Haven
They are 329 of the 9,793 NPPES records with a practice address in New Haven, and 2,623 internal medicine physician records in Connecticut.
All 2,623 in Connecticut → Every provider in New Haven → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Laurie Bridger, MDNew Haven, CT 065131720182876
- Karen Dahl, M.D.New Haven, CT 065131316056930
- Mehul Dalal, M.D.New Haven, CT 065131528256849
- Charles Dela Cruz, MD PHDNew Haven, CT 065131467548396
- Kelly Kyanko, M.D.New Haven, CT 065131881879674
- Nilda Leon-Smith, MDNew Haven, CT 065131992807937
- Mario Ochoa Prieto, M.D.New Haven, CT 065131407206295
- Jennifer Rockfeld, M.D.New Haven, CT 065131659532091
Common questions
What is Douglas P. Olson, M.D.'s NPI number?
Douglas P. Olson, M.D.'s National Provider Identifier (NPI) is 1972788792, issued on Dec 31, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Douglas P. Olson, M.D. located?
The NPPES record lists a practice address at 374 Grand Ave, New Haven, CT, 06513. Phone: (203) 777-7411. Providers update this record themselves, so call before visiting.
How can I verify Douglas P. Olson, M.D.'s license?
NPPES lists Connecticut license number 048098, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Douglas P. Olson, M.D. prescribe under Medicare Part D?
In 2024, Douglas P. Olson, M.D. had 2,294 Medicare Part D claims for 84 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.