Robert Neilan, M.D.
NPI 1689763724 · Hospitalist Physician · Fountain Valley, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Neilan, M.D. is a Hospitalist Physician provider in Fountain Valley, CA (NPI 1689763724).
Provider details
- NPI number
- 1689763724
- Entity type
- Individual
- Primary specialty
- Hospitalist PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A70376 (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
944 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 484 | $81 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 204 | $120 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 141 | $178 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 84 | $135 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 20 | $51 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Metoprolol Succinate | 26 | 17 |
| Furosemide | 19 | 14 |
| Prednisone | 16 | 16 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 15 | 15 |
| Atorvastatin Calcium | 14 | 11 |
| Apixabanbrand: Eliquis | 14 | — |
| Pantoprazole Sodium |
Practice location
Mailing address
Additional practice locations (1)
- 1201 W La Veta Ave700Orange, CA 92868-4213Phone: (714) 288-3230Fax: (714) 744-5294
Registry dates
- Enumerated
- 2006-10-12
- Last updated
- 2018-03-27
Frequently asked questions
- What is Robert Neilan's NPI number?
- Robert Neilan's National Provider Identifier (NPI) is 1689763724, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Neilan's specialty?
- Robert Neilan is listed in the NPPES registry with a primary specialty of Hospitalist Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Neilan located?
- Robert Neilan's practice location on file with NPPES is 17360 Brookhurst St, Fountain Valley, CA 92708-3720.
- What is Robert Neilan's phone number?
- The practice phone number listed in the NPPES registry for Robert Neilan is (949) 340-9530.
- Does Robert Neilan accept Medicare?
- Robert Neilan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Neilan's NPI active?
- Yes — Robert Neilan's NPI (1689763724) is active in the NPPES registry as of the last update on 2018-03-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.