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.

IndividualActiveAccepts Medicare

Dennis O'Connell, PA-C

NPI 1093984452 · Physician Assistant · Greenbrae, CA

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)

Practice location

250 Bon Air Rd

Greenbrae, CA 94904-1702

Phone: (415) 925-7203

Street-level locationGet directions

More CA providers

Mailing address

Po Box 276950

Sacramento, CA 95827-6950

Specialties & taxonomies

Physician AssistantPrimary363A00000XLicense PA 19228 (CA)
Physician Assistants & Advanced Practice Nursing Providers

Additional practice locations (1)

2351 Clay St
San Francisco, CA 94115-1931
Phone: (415) 858-5244

Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Detailed profile(80/100 index)

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 methodology.

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 not include 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.

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.

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

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

Transparency — industry payments

Based on CMS Open Payments, 2024; not all care is captured.

$93 across 1 record (Open Payments 2024)

Provider details

Practice location

Mailing address

Specialties & taxonomies

Additional practice locations (1)

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments

Registry dates

Frequently asked questions

Specialties & taxonomies

Additional practice locations (1)

Frequently asked questions

Profile Score

What this provider does (Medicare)

What this provider prescribes (Medicare Part D)

Transparency — industry payments