Robert Doomun, D.O.
NPI 1043221898 · Family Medicine Physician · Yorba Linda, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Doomun, D.O. is a Family Medicine Physician provider in Yorba Linda, CA (NPI 1043221898).
Provider details
- NPI number
- 1043221898
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Male
- Sole proprietor
- No
- License
- 20A7459 (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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
551 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 316 | $113 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 86 | $88 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 85 | $130 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 31 | $18 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 18 | $190 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 68 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 169 | 58 |
| Levothyroxine Sodium | 118 | 43 |
| Amlodipine Besylate | 113 | 43 |
| Omeprazole | 112 | 36 |
| Losartan Potassium | 100 | 33 |
| Tamsulosin Hcl | 76 | 24 |
| Metformin Hcl |
Practice location
Mailing address
Additional practice locations (1)
- 19871 Yorba Linda Blvd#104Yorba Linda, CA 92886-2811Phone: (714) 777-3606Fax: (714) 777-3664
Registry dates
- Enumerated
- 2006-08-10
- Last updated
- 2022-11-09
- Certified
- 2022-11-09
Frequently asked questions
- What is Robert Doomun's NPI number?
- Robert Doomun's National Provider Identifier (NPI) is 1043221898, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Doomun's specialty?
- Robert Doomun is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Doomun located?
- Robert Doomun's practice location on file with NPPES is 18637 Yorba Linda Blvd, Yorba Linda, CA 92886-4136.
- What is Robert Doomun's phone number?
- The practice phone number listed in the NPPES registry for Robert Doomun is (714) 790-8600.
- Does Robert Doomun accept Medicare?
- Robert Doomun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Doomun's NPI active?
- Yes — Robert Doomun's NPI (1043221898) is active in the NPPES registry as of the last update on 2022-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.