Quick answers
- Does Steven J. Pennybaker accept Medicare assignment?
- Yes. Medicare's clinician data says Steven J. Pennybaker 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 Steven J. Pennybaker see?
- In 2024, CMS data shows 34 Original Medicare patients and 208 services for Steven J. Pennybaker. This counts Original Medicare only and measures volume, not quality.
- What is Steven J. Pennybaker's NPI number?
- 1417371287. 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 Steven J. Pennybaker, 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 | 34 |
|---|---|
| Services billed to Medicare | 208 |
| Different services or procedures | 11 |
| Participating Medicare provider | Yes |
| Average age of these patients | 65 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)54 services
- Psychotherapy with evaluation and management visit, 30 minutes (90833)50 services
- Office or other outpatient visit for the evaluation and management of an established patient that requires the supervision of a physician or other qualified health care professional and provision of greater than 56 mg esketamine nasal self-administration, (G2083)36 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).
- Depression75%
- Anxiety68%
- High blood pressure65%
- High cholesterol59%
- Arthritis56%
Practice locations
Addresses where Steven J. Pennybaker is enrolled with Medicare (CMS data updated October 2, 2026).
- 2001 Dwight Way, Rm 4190Berkeley, CA 94704 (510) 204‑4635
Group practices
Medicare enrollment lists Steven J. Pennybaker as a member of this group (CMS data updated October 2, 2026).
- Bay Psychiatric Associates60 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Berkeley
Clinicians with the same Medicare primary specialty in Berkeley, CA — not a recommendation.
Other clinicians in Bay Psychiatric Associates
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Johns Hopkins University School Of Medicine |
| Graduation year | 2017 (9 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1417371287 |
| 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