Nafis Shamsid-Deen, MD
NPI 1326451220 · Internal Medicine Physician · Phoenix, AZ
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Nafis Shamsid-Deen, MD is a Internal Medicine Physician provider in Phoenix, AZ (NPI 1326451220).
Provider details
- NPI number
- 1326451220
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 54376 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
224 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 48 | $200 |
| Test for Exercise-Induced Heart and Lung Stress94621 | 37 | $62 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 36 | $138 |
| Test to Measure Rate of Airflow94375 | 33 | $14 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 32 | $110 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 16 | $75 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Macitentanbrand: Opsumit | 76 | — |
| Ambrisentan | 72 | — |
| Treprostinil Diolaminebrand: Orenitram Er | 57 | — |
| Sildenafil Citrate | 50 | — |
| Spironolactone | 50 | — |
| Furosemide | 29 | 12 |
| Tadalafil | 28 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$9,736 across 46 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
Additional practice locations (2)
- 1200 N Beaver StFlagstaff, AZ 86001Phone: (928) 773-0003Fax: (928) 773-1170
- 1360 N Rim DrFlagstaff, AZ 86001Phone: (928) 774-8000Fax: (928) 774-0372
Registry dates
- Enumerated
- 2014-06-09
- Last updated
- 2020-03-17
- Certified
- 2020-03-17
Frequently asked questions
- What is Nafis Shamsid-Deen's NPI number?
- Nafis Shamsid-Deen's National Provider Identifier (NPI) is 1326451220, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nafis Shamsid-Deen's specialty?
- Nafis Shamsid-Deen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Nafis Shamsid-Deen located?
- Nafis Shamsid-Deen's practice location on file with NPPES is 1111 E Mcdowell Rd, Phoenix, AZ 85006-2612.
- What is Nafis Shamsid-Deen's phone number?
- The practice phone number listed in the NPPES registry for Nafis Shamsid-Deen is (602) 839-2296.
- Does Nafis Shamsid-Deen accept Medicare?
- Nafis Shamsid-Deen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Nafis Shamsid-Deen's NPI active?
- Yes — Nafis Shamsid-Deen's NPI (1326451220) is active in the NPPES registry as of the last update on 2020-03-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.