Quick answers
- Does Cynthia L. Pena accept Medicare assignment?
- Yes. Medicare's clinician data says Cynthia L. Pena 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 Cynthia L. Pena see?
- In 2024, CMS data shows 233 Original Medicare patients and 1,879 services for Cynthia L. Pena. This counts Original Medicare only and measures volume, not quality.
- What is Cynthia L. Pena's NPI number?
- 1417031717. 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 Cynthia L. Pena, 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 | 233 |
|---|---|
| Services billed to Medicare | 1,879 |
| Different services or procedures | 43 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)585 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)513 services
- Injection, ketorolac tromethamine, per 15 mg (J1885)119 services
- Injection, dexamethasone sodium phosphate, 1 mg (J1100)60 services
- Use of a drug to induce depression of consciousness by physician performing a procedure (5 years or older), initial 15 minutes (99152)59 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).
- Arthritis75%
- High blood pressure71%
- High cholesterol64%
- Diabetes30%
- Anxiety30%
- Depression29%
Practice locations
Addresses where Cynthia L. Pena is enrolled with Medicare (CMS data updated October 2, 2026).
- 1000 Nut Tree RdVacaville, CA 95687 (707) 624‑7000
- 1020 Nut Tree RdVacaville, CA 95687
- 1020 Nut Tree Rd, Suite 260 270 and 290Vacaville, CA 95687 (707) 624‑8290
- 1200 B Gale Wilson BlvdFairfield, CA 94533 (707) 429‑3600
- 1860 Pennsylvania AveFairfield, CA 94533 (707) 646‑4114
Group practices
Medicare enrollment lists Cynthia L. Pena as a member of these groups (CMS data updated October 2, 2026).
- NorthBay Physicians Surgery Center, LLC324 clinicians in the group
- NorthBay Health Medical Foundation213 clinicians in the group
Specialties
- Pain Managementprimary
Other pain management doctors in California
Clinicians with the same Medicare primary specialty in California — not a recommendation.
Other clinicians in NorthBay Physicians Surgery Center, LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2000 (26 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1417031717 |
| 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