Charles Gregory, DO PA
NPI 1477581221 · Family Medicine Physician · Portland, TX
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Charles Gregory, DO PA is a Family Medicine Physician provider in Portland, TX (NPI 1477581221).
Provider details
- NPI number
- 1477581221
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO PA
- Sex
- Male
- Sole proprietor
- No
- License
- L7737 (TX)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
1,980 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 498 | $81 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 480 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 408 | $114 |
| Injection of Drug Or Substance Under Skin Or Into Muscle96372 | 318 | $12 |
| Urinalysis, Manual Test81002 | 157 | $3 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 59 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 137 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 580 | 79 |
| Atorvastatin Calcium | 389 | 154 |
| Levothyroxine Sodium | 378 | 133 |
| Lisinopril | 271 | 100 |
| Pantoprazole Sodium | 225 | 90 |
| Gabapentin | 218 | 75 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 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
- 2006-06-29
- Last updated
- 2024-06-14
- Certified
- 2024-06-14
Frequently asked questions
- What is Charles Gregory's NPI number?
- Charles Gregory's National Provider Identifier (NPI) is 1477581221, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Charles Gregory's specialty?
- Charles Gregory is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Charles Gregory located?
- Charles Gregory's practice location on file with NPPES is 311b Buddy Ganem, Portland, TX 78374-3233.
- What is Charles Gregory's phone number?
- The practice phone number listed in the NPPES registry for Charles Gregory is (361) 643-9800.
- Does Charles Gregory accept Medicare?
- Charles Gregory is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Charles Gregory's NPI active?
- Yes — Charles Gregory's NPI (1477581221) is active in the NPPES registry as of the last update on 2024-06-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.