Marshall Bishop, MD
NPI 1821079260 · Family Medicine Physician · Shiner, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marshall Bishop, MD is a Family Medicine Physician provider in Shiner, TX (NPI 1821079260).
Provider details
- NPI number
- 1821079260
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- K8879 (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
882 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 179 | $9 |
| Advance Care Planning, First 30 Minutes99497 | 106 | $78 |
| Annual Depression Screening, 5 to 15 MinutesG0444 | 96 | $18 |
| Annual Alcohol Misuse Screening, 5 to 15 MinutesG0442 | 92 | $18 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 89 | $124 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 40 | $75 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 150 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 414 | 77 |
| Furosemide | 399 | 63 |
| Losartan Potassium | 329 | 59 |
| Amlodipine Besylate | 316 | 64 |
| Gabapentin | 293 | 63 |
| Donepezil Hcl | 269 | 34 |
| Levothyroxine Sodium | 245 | 41 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$110 across 6 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
- 2005-11-11
- Last updated
- 2008-07-18
Frequently asked questions
- What is Marshall Bishop's NPI number?
- Marshall Bishop's National Provider Identifier (NPI) is 1821079260, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marshall Bishop's specialty?
- Marshall Bishop is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Marshall Bishop located?
- Marshall Bishop's practice location on file with NPPES is 124 E Wolters 2nd, Shiner, TX 77984-7109.
- What is Marshall Bishop's phone number?
- The practice phone number listed in the NPPES registry for Marshall Bishop is (361) 594-3824.
- Does Marshall Bishop accept Medicare?
- Marshall Bishop is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marshall Bishop's NPI active?
- Yes — Marshall Bishop's NPI (1821079260) is active in the NPPES registry as of the last update on 2008-07-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.