Carolynn Ohlson, PA-C
Physician Assistant · Boston, MA
Carolynn Ohlson, PA-C is a physician assistant with a practice address in Boston, Massachusetts, and NPI 1790211654, issued on May 11, 2017. Check the license (Massachusetts PA6108, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Carolynn Ohlson
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA6108 MA
Self-reported in NPPES; status is on the state search - Practice location
- 450 Brookline Ave, Boston, MA 02215
- Phone
- (774) 265-5191
- Enumerated
- May 11, 2017
- Record last updated
- Aug 16, 2017 (not updated in 9 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20170706002526); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,713 in Massachusetts → Look up another NPI →
Also registered at 450 Brookline Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Carolynn Ohlson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license PA6108Check 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 physician assistant in 2024
24 Medicare Part D claims, against an average of 830 among the 101,058 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Dana-Farber Cancer Institute, Inc.Boston, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Carolynn Ohlson among 4,713 physician assistant records in Massachusetts
Carolynn Ohlson, PA-C is one of 4,713 physician assistant records with a practice address in Massachusetts. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2017, is newer than 40% of them.
- NPI issued2017 · 40% of these records are older, 55% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2016 · median 2019 among the 3,217 with a school on file
- Record last updated2017 · 38% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,660 physician assistant records list a practice address in Boston
They are 1,660 of the 41,865 NPPES records with a practice address in Boston, and 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in Boston → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Elizabeth Alqueza, PA-CBoston, MA 022151972584100
- Margaret Buonanno, PABoston, MA 022151851354989
- Amy Clyde, PABoston, MA 022151326001488
- Hajar Delshad, PA-CBoston, MA 022151801868914
- Nicole Dettmann, PABoston, MA 022151619931813
- Jerald Feuer, PABoston, MA 022151457332801
- Nancy Herriott, PABoston, MA 022151467418012
- Derek Hersey, PABoston, MA 022151114981289
Common questions
What is Carolynn Ohlson, PA-C's NPI number?
Carolynn Ohlson, PA-C's National Provider Identifier (NPI) is 1790211654, issued on May 11, 2017. An NPI identifies a provider in billing; it is not a license.
Where is Carolynn Ohlson, PA-C located?
The NPPES record lists a practice address at 450 Brookline Ave, Boston, MA, 02215. Phone: (774) 265-5191. Providers update this record themselves, so call before visiting.
How can I verify Carolynn Ohlson, PA-C's license?
NPPES lists Massachusetts license number PA6108, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Carolynn Ohlson, PA-C prescribe under Medicare Part D?
In 2024, Carolynn Ohlson, PA-C had 24 Medicare Part D claims; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Carolynn Ohlson, PA-C's MIPS final score?
The 2023 MIPS final score is 86.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.