Osman Dandan, PA
NPI 1598131799 · Medical Physician Assistant · Tustin, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Osman Dandan, PA is a Medical Physician Assistant provider in Tustin, CA (NPI 1598131799).
Provider details
- NPI number
- 1598131799
- Entity type
- Individual
- Primary specialty
- Medical Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA
- Sex
- Male
- Sole proprietor
- No
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
10 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
28 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) |
|---|---|---|
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 28 | $152 |
Typical Medicare-allowed amounts for these services range $152–$152 (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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$105 across 6 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 (2)
- 9918 Katella Ave Ste A-CAnaheim, CA 92804-6465Phone: (714) 665-9890Fax: (714) 665-9891
- 11180 Warner Ave Ste 353Fountain Valley, CA 92708-7516Phone: (714) 665-9890Fax: (714) 665-9891
Registry dates
- Enumerated
- 2015-08-11
- Last updated
- 2023-01-10
- Certified
- 2023-01-10
Frequently asked questions
- What is Osman Dandan's NPI number?
- Osman Dandan's National Provider Identifier (NPI) is 1598131799, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Osman Dandan's specialty?
- Osman Dandan is listed in the NPPES registry with a primary specialty of Medical Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Osman Dandan located?
- Osman Dandan's practice location on file with NPPES is 661 W 1st St Ste G, Tustin, CA 92780-2939.
- What is Osman Dandan's phone number?
- The practice phone number listed in the NPPES registry for Osman Dandan is (714) 665-9890.
- Does Osman Dandan accept Medicare?
- Osman Dandan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Osman Dandan's NPI active?
- Yes — Osman Dandan's NPI (1598131799) is active in the NPPES registry as of the last update on 2023-01-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.