Mark William Jennings, M.D.
Anesthesiology Physician · Boston, MA
Mark William Jennings, M.D. is an anesthesiology physician with a practice address in Boston, Massachusetts, and NPI 1396124988, issued on May 28, 2015. Check the license (Massachusetts 290324, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark William Jennings
- Credential
- M.D.
- Primary taxonomy
- Anesthesiology Physician 207L00000X
- License numbers
- 290324 MA
20085 HI
Self-reported in NPPES; status is on the state search - Practice location
- 133 Seaport Blvd Unit 1819, Boston, MA 02210
- Phone
- (607) 426-8112
- Enumerated
- May 28, 2015
- Record last updated
- Jan 3, 2022
- Medicare enrollment
- Enrolled (PECOS I20220129000005); accepts Medicare assignment
- Medical or professional school
- Eastern Virginia Medical School, 2015
- Entity
- Type 1 · individual
8 nearest anesthesiology physician records → All 2,089 in Massachusetts → Look up another NPI →
Verify Mark William Jennings in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 290324Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $99.45
1 payment: food and beverage; the largest payer was Heron Therapeutics, Inc. The 17,774 providers of this specialty with any payment received $669.59 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
- Jjm Medical Services PCWorcester, MA
- North Shore Ambulatory Anesthesia Partners LLCPeabody, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark William Jennings among 2,089 anesthesiology physician records in Massachusetts
Mark William Jennings, M.D. 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 2015, is newer than 70% of them.
- NPI issued2015 · 70% of these records are older, 27% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2015 · median 2008 among the 1,472 with a school on file
- Record last updated2022 · 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.
All 2,089 in Massachusetts → Every provider in Boston → Anesthesiology Physician nationwide →
The 8 anesthesiology physician records with the nearest ZIP codes
- Anjali Aggarwal, M.D.Boston, MA 022101801955265
- Sibinka Bajic, M.D., PH.D.Boston, MA 022111437293735
- Ruma Bose, M.D.Boston, MA 022151730126327
- Jeffrey Jankun, M.D.Boston, MA 022151821045519
- Lisa Kunze, M.D.Boston, MA 022151851347652
- Shirie Leng, M.D.Boston, MA 022151841247574
- Yunping Li, M.D.Boston, MA 022151922069947
- Achikam Oren Grinberg, M.D.Boston, MA 022151134116924
Common questions
What is Mark William Jennings, M.D.'s NPI number?
Mark William Jennings, M.D.'s National Provider Identifier (NPI) is 1396124988, issued on May 28, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Mark William Jennings, M.D. located?
The NPPES record lists a practice address at 133 Seaport Blvd Unit 1819, Boston, MA, 02210. Phone: (607) 426-8112. Providers update this record themselves, so call before visiting.
How can I verify Mark William Jennings, M.D.'s license?
NPPES lists Massachusetts license number 290324, 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.