Heidi Ann O'Brien, PA-C
Physician Assistant · Milford, MA
Heidi Ann O'Brien, PA-C is a physician assistant with a practice address in Milford, Massachusetts, and NPI 1417057944, issued on Sep 24, 2006. Check the license (Massachusetts AP 1492, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Heidi Ann O'Brien
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- AP 1492 MA
Self-reported in NPPES; status is on the state search - Practice location
- 115 Water St, Milford, MA 01757
- Phone
- (508) 482-5411
- Enumerated
- Sep 24, 2006
- Record last updated
- Jan 4, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (508) 482-5417
- Medicare enrollment
- Enrolled (PECOS I20040706000108); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 4,713 in Massachusetts → Look up another NPI →
Also registered at 115 Water St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Heidi Ann O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license AP 1492Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.1 times the Medicare Part D claims of the average physician assistant in 2024
3,416 Medicare Part D claims for 728 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 20% of claims. 21 claims were for opioids.
Most prescribed
- Tamsulosin Hcl727 claims
- Myrbetriq297 claims
- Gemtesa257 claims
- Methenamine Hippurate235 claims
- Finasteride226 claims
- Solifenacin Succinate200 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: $386.10
17 payments; by number, the most common kind was food and beverage; the largest payer was Tolmar, Inc. The 64,719 providers of this specialty with any payment received $841.65 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
- Milford Regional Physician Group, Inc.Milford, MA
- Umass Memorial Medical Group IncMilford, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Heidi Ann O'Brien among 4,713 physician assistant records in Massachusetts
Heidi Ann O'Brien, 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 2006, is newer than 1% of them.
- NPI issued2006 · 1% of these records are older, 87% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2002 · median 2019 among the 3,217 with a school on file
- Record last updated2016 · 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).
30 physician assistant records list a practice address in Milford
They are 30 of the 3,459 NPPES records with a practice address in Milford, and 4,713 physician assistant records in Massachusetts.
All 4,713 in Massachusetts → Every provider in Milford → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Sarah Bajema, PA-CMilford, MA 017571558713362
- Michael Brunell, PA-CMilford, MA 017571407154552
- Adam Consigli, MS, PA-CMilford, MA 017571861881070
- Marcel Droz, PA-CMilford, MA 017571548598774
- Shelby FordMilford, MA 017571295375020
- Alexander Hawley, PA-CMilford, MA 017571588110027
- Rebecca Howard, PAMilford, MA 017571053318683
- Christopher Lesiege, PA-CMilford, MA 017571518065051
Common questions
What is Heidi Ann O'Brien, PA-C's NPI number?
Heidi Ann O'Brien, PA-C's National Provider Identifier (NPI) is 1417057944, issued on Sep 24, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Heidi Ann O'Brien, PA-C located?
The NPPES record lists a practice address at 115 Water St, Milford, MA, 01757. Phone: (508) 482-5411. Providers update this record themselves, so call before visiting.
How can I verify Heidi Ann O'Brien, PA-C's license?
NPPES lists Massachusetts license number AP 1492, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does Heidi Ann O'Brien, PA-C prescribe under Medicare Part D?
In 2024, Heidi Ann O'Brien, PA-C had 3,416 Medicare Part D claims for 728 beneficiaries; the average among physician assistant prescribers was 830. 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.