Robert Holub, M.D.
NPI 1083667893 · Nephrology Physician · San Antonio, TX
Enrolled with Medicare as Practitioner - Nephrology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Robert Holub, M.D. is a Nephrology Physician provider in San Antonio, TX (NPI 1083667893).
Provider details
- NPI number
- 1083667893
- Entity type
- Individual
- Primary specialty
- Nephrology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- M1149 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,097 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 287 | $70 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 207 | $56 |
| Dialysis Services, 4 Or More Physician Visits Per Month (20 Years Or Older)90960 | 158 | $312 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 130 | $114 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 111 | $105 |
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 27 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Dapagliflozin Propanediolbrand: Farxiga | 153 | 52 |
| Carvedilol | 125 | 44 |
| Amlodipine Besylate | 121 | 50 |
| Losartan Potassium | 121 | 45 |
| Sevelamer Carbonate | 104 | 39 |
| Furosemide | 93 | 37 |
| Nifedipinebrand: Nifedipine Er | 81 | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$293 across 10 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
Registry dates
- Enumerated
- 2006-05-19
- Last updated
- 2023-09-26
- Certified
- 2023-09-26
Frequently asked questions
- What is Robert Holub's NPI number?
- Robert Holub's National Provider Identifier (NPI) is 1083667893, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Robert Holub's specialty?
- Robert Holub is listed in the NPPES registry with a primary specialty of Nephrology Physician (Allopathic & Osteopathic Physicians).
- Where is Robert Holub located?
- Robert Holub's practice location on file with NPPES is 1123 N Main Ave Ste 120, San Antonio, TX 78212-4738.
- What is Robert Holub's phone number?
- The practice phone number listed in the NPPES registry for Robert Holub is (210) 226-2001.
- Does Robert Holub accept Medicare?
- Robert Holub is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Robert Holub's NPI active?
- Yes — Robert Holub's NPI (1083667893) is active in the NPPES registry as of the last update on 2023-09-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.