Dennis O'Connell, PA-C
NPI 1093984452 · Physician Assistant · Greenbrae, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dennis O'Connell, PA-C is a Physician Assistant provider in Greenbrae, CA (NPI 1093984452).
Provider details
- NPI number
- 1093984452
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Male
- Sole proprietor
- No
- License
- PA 19228 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
408 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) |
|---|---|---|
| Emergency Department Visit With Moderate Level of Medical Decision Making99284 | 218 | $108 |
| Emergency Department Visit With High Level of Medical Decision Making99285 | 136 | $159 |
| Emergency Department Visit With Low Level of Medical Decision Making99283 | 28 | $63 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 26 | $7 |
Typical Medicare-allowed amounts for these services range $7–$159 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 57 | 57 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 34 | 34 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 20 | 20 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 18 | 18 |
| Doxycycline Monohydrate | 12 | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$93 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
Additional practice locations (1)
- 2351 Clay StSan Francisco, CA 94115-1931Phone: (415) 858-5244
Registry dates
- Enumerated
- 2008-02-29
- Last updated
- 2025-10-24
- Certified
- 2025-10-24
Frequently asked questions
- What is Dennis O'Connell's NPI number?
- Dennis O'Connell's National Provider Identifier (NPI) is 1093984452, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dennis O'Connell's specialty?
- Dennis O'Connell is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Dennis O'Connell located?
- Dennis O'Connell's practice location on file with NPPES is 250 Bon Air Rd, Greenbrae, CA 94904-1702.
- What is Dennis O'Connell's phone number?
- The practice phone number listed in the NPPES registry for Dennis O'Connell is (415) 925-7203.
- Does Dennis O'Connell accept Medicare?
- Dennis O'Connell is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dennis O'Connell's NPI active?
- Yes — Dennis O'Connell's NPI (1093984452) is active in the NPPES registry as of the last update on 2025-10-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.