NPPES file of Aug 9, 2026

Robert Philip Stephenson, D.O.

Anesthesiology Physician · Boston, MA

Robert Philip Stephenson, D.O. is an anesthesiology physician with a practice address in Boston, Massachusetts, and NPI 1538332135, issued on Apr 4, 2008. Check the license (Massachusetts 226381, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1538332135
Name
Robert Philip Stephenson
Credential
D.O.
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
226381 MA
Self-reported in NPPES; status is on the state search
Practice location
736 Cambridge Street, Boston, MA 02135
Phone
(617) 789-9000
Enumerated
Apr 4, 2008
Record last updated
Dec 19, 2011 (not updated in 15 years: call before relying on the address or phone)
Fax
(617) 254-6384
Medicare enrollment
Enrolled (PECOS I20100922001244); may accept Medicare assignment
Medical or professional school
University Of New England, College Of Osteo Medicine, 2006
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 736 Cambridge Street

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Pia Gabrielle Alfonso, M.D.Internal Medicine Physician1356035737
  2. James Armstrong, P.A.Medical Physician Assistant1568645182
  3. Luca Bigatello, MDAnesthesiology Physician1003890419
  4. Brian Engles, M.D.Anesthesiology Physician1811163751
  5. Adnan Ezici, MDStudent in an Organized Health Care Education/Training Program1821781915
  6. Giorgi Goletiani, M.D.Internal Medicine Physician1184415416

Verify Robert Philip Stephenson in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 226381
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Capa Anesthesia LLCWeymouth, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Robert Philip Stephenson among 2,089 anesthesiology physician records in Massachusetts

Robert Philip Stephenson, D.O. is one of 2,089 anesthesiology physician records with a practice address in Massachusetts. 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 2008, is newer than 49% of them.

  • NPI issued2008 · 49% of these records are older, 46% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2006 · median 2008 among the 1,472 with a school on file
  • Record last updated2011 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,082 anesthesiology physician records list a practice address in Boston

They are 1,082 of the 41,865 NPPES records with a practice address in Boston, and 2,089 anesthesiology physician records in Massachusetts.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Thomas Edrich, MD PHDBrighton, MA 021351295721827
  2. Emily Guimaraes, MDBoston, MA 021351023008323
  3. Robert Hunsaker, MDBrighton, MA 021351831185479
  4. Mark Lovich, MDBrighton, MA 021351396739918
  5. Alla Marshansky, MDBrighton, MA 021351760476592
  6. Raimis Matulionis, MDBoston, MA 021351437149804
  7. Srdjan Nedeljkovic, MDBrighton, MA 021351457347015
  8. Gordon Novak, MDBrighton, MA 021351629067319

Common questions

What is Robert Philip Stephenson, D.O.'s NPI number?

Robert Philip Stephenson, D.O.'s National Provider Identifier (NPI) is 1538332135, issued on Apr 4, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Robert Philip Stephenson, D.O. located?

The NPPES record lists a practice address at 736 Cambridge Street, Boston, MA, 02135. Phone: (617) 789-9000. Providers update this record themselves, so call before visiting.

How can I verify Robert Philip Stephenson, D.O.'s license?

NPPES lists Massachusetts license number 226381, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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.