William Collazo, M.D., F.A.C.C.
NPI 1649290594 · Cardiovascular Disease Physician · Oklahoma City, OK
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Collazo, M.D., F.A.C.C. is a Cardiovascular Disease Physician provider in Oklahoma City, OK (NPI 1649290594).
Provider details
- NPI number
- 1649290594
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., F.A.C.C.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 17633 (OK)
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
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
2,930 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 748 | $13 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 542 | $120 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 510 | $8 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 195 | $84 |
| Evaluation of Single, Dual, Multiple Lead Or Leadless Pacemaker System Or Implantable Defibrillator System, Remote Up to 90 Days93296 | 149 | $19 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 40 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 476 | 140 |
| Metoprolol Succinate | 428 | 121 |
| Ezetimibe | 326 | 98 |
| Losartan Potassium | 310 | 89 |
| Clopidogrel Bisulfatebrand: Clopidogrel | 260 | 76 |
| Amlodipine Besylate | 210 | 61 |
| Furosemide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$500 across 14 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
- 2006-07-20
- Last updated
- 2021-01-27
- Certified
- 2021-01-27
Frequently asked questions
- What is William Collazo's NPI number?
- William Collazo's National Provider Identifier (NPI) is 1649290594, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Collazo's specialty?
- William Collazo is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is William Collazo located?
- William Collazo's practice location on file with NPPES is 1211 N Shartel Ave Ste 1006, Oklahoma City, OK 73103-2433.
- What is William Collazo's phone number?
- The practice phone number listed in the NPPES registry for William Collazo is (405) 546-7699.
- Does William Collazo accept Medicare?
- William Collazo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Collazo's NPI active?
- Yes — William Collazo's NPI (1649290594) is active in the NPPES registry as of the last update on 2021-01-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.