William Park, M.D.
NPI 1821002288 · Anesthesiology Physician · Garden Grove, CA
Enrolled with Medicare as Practitioner - Anesthesiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Park, M.D. is a Anesthesiology Physician provider in Garden Grove, CA (NPI 1821002288).
Provider details
- NPI number
- 1821002288
- Entity type
- Individual
- Primary specialty
- Anesthesiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- A52866C (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
8,254 Medicare services, 2024 (ranked within specialty)
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 1,445 | $99 |
| Application of Ultrasound, Each 15 Minutes97035 | 1,370 | $11 |
| Therapy Procedure Using Exercise to Develop Strength, Endurance, Range of Motion, and Flexibility, Each 15 Minutes97110 | 1,368 | $24 |
| Therapy Procedure Using Massage, Each 15 Minutes97124 | 1,350 | $33 |
| Infusion Into a Vein for Hydration, Each Additional Hour96361 | 990 | $14 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 548 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Icosapent Ethylbrand: Vascepa | 46 | 12 |
| Azithromycin | 46 | 22 |
| Rosuvastatin Calcium | 43 | 14 |
| Levocetirizine Dihydrochloride | 33 | 11 |
| Amlodipine Besylate | 31 | — |
| Ringer'S Solution,lactatedbrand: Lactated Ringers | 30 | 21 |
| Donepezil Hcl | 25 | — |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-28
- Last updated
- 2008-08-13
Frequently asked questions
- What is William Park's NPI number?
- William Park's National Provider Identifier (NPI) is 1821002288, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Park's specialty?
- William Park is listed in the NPPES registry with a primary specialty of Anesthesiology Physician (Allopathic & Osteopathic Physicians).
- Where is William Park located?
- William Park's practice location on file with NPPES is 9828 Garden Grove Blvd Ste 201, Garden Grove, CA 92844-1659.
- What is William Park's phone number?
- The practice phone number listed in the NPPES registry for William Park is (714) 530-9633.
- Does William Park accept Medicare?
- William Park is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Park's NPI active?
- Yes — William Park's NPI (1821002288) is active in the NPPES registry as of the last update on 2008-08-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.