Robert Gross, DO
NPI 1396827358 · Internal Medicine Physician · Lake Isabella, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Gross, DO is a Internal Medicine Physician provider in Lake Isabella, CA (NPI 1396827358).
Provider details
- NPI number
- 1396827358
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- Yes
- License
- 20A7951 (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
1,266 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 | 396 | $91 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 251 | $117 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 141 | $170 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 125 | $128 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 | 106 | $113 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 69 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Apixabanbrand: Eliquis | 350 | 15 |
| Atorvastatin Calcium | 237 | 30 |
| Linagliptinbrand: Tradjenta | 189 | — |
| Omeprazole | 178 | 29 |
| Furosemide | 165 | 29 |
| Gabapentin | 147 | 22 |
| Rivaroxabanbrand: Xarelto |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-19
- Last updated
- 2008-06-30
Frequently asked questions
- What is Robert Gross's NPI number?
- Robert Gross's National Provider Identifier (NPI) is 1396827358, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Gross's specialty?
- Robert Gross is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Gross located?
- Robert Gross's practice location on file with NPPES is 6425 Lynch Canyon Dr, Lake Isabella, CA 93240-9726.
- What is Robert Gross's phone number?
- The practice phone number listed in the NPPES registry for Robert Gross is (760) 379-8630.
- Does Robert Gross accept Medicare?
- Robert Gross is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Gross's NPI active?
- Yes — Robert Gross's NPI (1396827358) is active in the NPPES registry as of the last update on 2008-06-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.