Marilyn Clark, M.D.
NPI 1851351845 · Rheumatology Physician · Temple, TX
Marilyn Clark, M.D. is a Rheumatology Physician provider in Temple, TX (NPI 1851351845).
Provider details
- NPI number
- 1851351845
- Entity type
- Individual
- Primary specialty
- Rheumatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- J1930 (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
534 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 485 | $92 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 19 | $9 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 16 | $120 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 14 | $63 |
Typical Medicare-allowed amounts for these services range $9–$120 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 61 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 546 | 156 |
| Hydroxychloroquine Sulfate | 448 | 118 |
| Methotrexate Sodiumbrand: Methotrexate | 424 | 106 |
| Etanerceptbrand: Enbrel Sureclick | 225 | 25 |
| Leflunomide | 191 | 53 |
| Sulfasalazinebrand: Sulfasalazine Dr | 159 | 36 |
| Azathioprine |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$55 across 1 record (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
- 2006-03-24
- Last updated
- 2021-01-13
- Certified
- 2021-01-13
Frequently asked questions
- What is Marilyn Clark's NPI number?
- Marilyn Clark's National Provider Identifier (NPI) is 1851351845, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marilyn Clark's specialty?
- Marilyn Clark is listed in the NPPES registry with a primary specialty of Rheumatology Physician (Allopathic & Osteopathic Physicians).
- Where is Marilyn Clark located?
- Marilyn Clark's practice location on file with NPPES is 2401 S 31st St, Temple, TX 76508-0001.
- What is Marilyn Clark's phone number?
- The practice phone number listed in the NPPES registry for Marilyn Clark is (254) 724-2111.
- Is Marilyn Clark's NPI active?
- Yes — Marilyn Clark's NPI (1851351845) is active in the NPPES registry as of the last update on 2021-01-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.