Terry Chambless, M.D.,P.A.
NPI 1831188572 · Internal Medicine Physician · Round Rock, TX
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Terry Chambless, M.D.,P.A. is a Internal Medicine Physician provider in Round Rock, TX (NPI 1831188572).
Provider details
- NPI number
- 1831188572
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.,P.A.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G3223 (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
448 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) |
|---|---|---|
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 115 | $14 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 88 | $123 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 87 | $14 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 82 | $124 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 76 | $87 |
Typical Medicare-allowed amounts for these services range $14–$124 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, 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 · 91 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 560 | 145 |
| Ezetimibe | 527 | 145 |
| Evolocumabbrand: Repatha Sureclick | 293 | 38 |
| Pioglitazone Hcl | 276 | 80 |
| Levothyroxine Sodium | 251 | 73 |
| Olmesartan Medoxomil | 218 | 70 |
| Liothyronine Sodium | 207 | 50 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$524 across 45 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
- 2005-10-16
- Last updated
- 2022-03-02
- Certified
- 2022-03-02
Frequently asked questions
- What is Terry Chambless's NPI number?
- Terry Chambless's National Provider Identifier (NPI) is 1831188572, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Terry Chambless's specialty?
- Terry Chambless is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Terry Chambless located?
- Terry Chambless's practice location on file with NPPES is 7200 Wyoming Spgs, Round Rock, TX 78681-4303.
- What is Terry Chambless's phone number?
- The practice phone number listed in the NPPES registry for Terry Chambless is (512) 244-1683.
- Does Terry Chambless accept Medicare?
- Terry Chambless is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Terry Chambless's NPI active?
- Yes — Terry Chambless's NPI (1831188572) is active in the NPPES registry as of the last update on 2022-03-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.