Patrick Buan, P.A-C
NPI 1790729655 · Physician Assistant · San Diego, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Provider details
- NPI number
- 1790729655
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- P.A-C
- Sex
- Male
- Sole proprietor
- No
- License
- PA17576 (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
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
7 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
671 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 268 | $83 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 146 | $101 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 85 | $116 |
| Amplifed Dna Or Rna Probe Detection of Severe Acute Respiratory Syndrome Coronavirus 2 (covid-19) Antigen87635 | 55 | $50 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 22 | $13 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 14 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Azithromycin | 93 | 93 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 50 | 50 |
| Methylprednisolone | 49 | 49 |
| Nirmatrelvir/Ritonavirbrand: Paxlovid | 48 | 48 |
| Doxycycline Hyclate | 40 | 37 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 38 | 37 |
| Cephalexin | 37 | 37 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$125 across 2 records (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 (6)
- 2295 Otay Lakes Rd Ste 110Chula Vista, CA 91915-1160Phone: (800) 926-8273Fax: (888) 539-8781
- 1505 Encinitas BlvdEncinitas, CA 92024-2933Phone: (800) 926-8273Fax: (888) 539-8781
- 16950 Via TazonSan Diego, CA 92127-1607Phone: (800) 926-8273Fax: (888) 539-8781
- 4510 Executive Dr Ste 215San Diego, CA 92121-3023Phone: (800) 926-8273Fax: (888) 539-8781
- 203 W F StSan Diego, CA 92101-6016Phone: (800) 926-8273Fax: (888) 539-8781
- 910 Sycamore Ave Ste 270Vista, CA 92081-7852Phone: (800) 926-8273Fax: (888) 539-8781
Registry dates
- Enumerated
- 2006-06-15
- Last updated
- 2025-10-06
- Certified
- 2025-10-06
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.