Quick answers
- Does Garry Jennings accept Medicare assignment?
- Yes. Medicare's clinician data says Garry Jennings accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Garry Jennings see?
- In 2024, CMS data shows 114 Original Medicare patients and 756 services for Garry Jennings. This counts Original Medicare only and measures volume, not quality.
- What is Garry Jennings's NPI number?
- 1245206390. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Garry Jennings, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 114 |
|---|---|
| Services billed to Medicare | 756 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 66 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)655 services
- Anesthesia for exam of colon using an endoscope (00812)27 services
- Anesthesia for other procedure on large bowel using an endoscope (00811)21 services
- Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope (00731)11 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol69%
- Arthritis45%
- Diabetes38%
- Depression31%
- Anxiety31%
Practice locations
Addresses where Garry Jennings is enrolled with Medicare (CMS data updated October 2, 2026).
- 3102 N Hilton StBaltimore, MD 21216 (410) 578‑0730
Specialties
- Anesthesiologyprimary
- Pain Managementalso
Other anesthesiologists in Baltimore
Clinicians with the same Medicare primary specialty in Baltimore, MD — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Geisel School Of Medicine At Dartmouth |
| Graduation year | 1987 (39 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1245206390 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians