Mark Jennings, M.D.
NPI 1396124988 · Anesthesiology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Jennings, M.D. is a Anesthesiology Physician provider in Boston, MA (NPI 1396124988).
Provider details
- NPI number
- 1396124988
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 20085 (HI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
11 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
445 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Anesthesia for Lens Surgery00142 | 277 | $113 |
| Anesthesia for Injection, Drainage Or Aspiration Procedures on Spine Or Spinal Cord of Lower Back Accessed Through Skin Using Imaging Guidance01938 | 47 | $102 |
| Anesthesia for Other Procedure on Eye00140 | 31 | $118 |
| Anesthesia for Other Procedure on Large Bowel Using an Endoscope00811 | 28 | $130 |
| Anesthesia for Procedure on Nerves, Muscles, Tendons, and Tissue of Forearm, Wrist, and Hand01810 | 25 | $100 |
| Anesthesia for Exam of Colon Using an Endoscope00812 | 20 | $94 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$99 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2015-05-28
- Last updated
- 2022-01-03
- Certified
- 2022-01-03
Frequently asked questions
- What is Mark Jennings's NPI number?
- Mark Jennings's National Provider Identifier (NPI) is 1396124988, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Jennings's specialty?
- Mark Jennings is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Jennings located?
- Mark Jennings's practice location on file with NPPES is 133 Seaport Blvd Unit 1819, Boston, MA 02210-2674.
- What is Mark Jennings's phone number?
- The practice phone number listed in the NPPES registry for Mark Jennings is (607) 426-8112.
- Does Mark Jennings accept Medicare?
- Mark Jennings is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Jennings's NPI active?
- Yes — Mark Jennings's NPI (1396124988) is active in the NPPES registry as of the last update on 2022-01-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.