C Mackenzie, M.D.
NPI 1750344289 · Specialist · New York, NY
Enrolled with Medicare as Practitioner - Rheumatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
C Mackenzie, M.D. is a Specialist provider in New York, NY (NPI 1750344289).
Provider details
- NPI number
- 1750344289
- Entity type
- Individual
- Primary specialty
- SpecialistOther Service Providers
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 156880 (NY)
Specialties & taxonomies
Other Service Providers
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
1,136 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 | 290 | $101 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 189 | $144 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 146 | $143 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 124 | $185 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Tracing93005 | 99 | $8 |
| Insertion of Needle Into Vein for Collection of Blood Sample |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 74 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 308 | 81 |
| Amlodipine Besylate | 177 | 48 |
| Rosuvastatin Calcium | 166 | 47 |
| Levothyroxine Sodium | 143 | 36 |
| Meloxicam | 137 | 39 |
| Prednisone | 113 | 34 |
| Methotrexate Sodiumbrand: Methotrexate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$120 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
- 2006-04-07
- Last updated
- 2021-04-28
- Certified
- 2021-04-28
Frequently asked questions
- What is C Mackenzie's NPI number?
- C Mackenzie's National Provider Identifier (NPI) is 1750344289, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is C Mackenzie's specialty?
- C Mackenzie is listed in the NPPES registry with a primary specialty of Specialist (Other Service Providers).
- Where is C Mackenzie located?
- C Mackenzie's practice location on file with NPPES is 535 E 70th St, New York, NY 10021-4872.
- What is C Mackenzie's phone number?
- The practice phone number listed in the NPPES registry for C Mackenzie is (212) 606-1669.
- Does C Mackenzie accept Medicare?
- C Mackenzie is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is C Mackenzie's NPI active?
- Yes — C Mackenzie's NPI (1750344289) is active in the NPPES registry as of the last update on 2021-04-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.