Marcelo Nasif, M.D.
NPI 1912936907 · Infectious Disease Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcelo Nasif, M.D. is a Infectious Disease Physician provider in Tucson, AZ (NPI 1912936907).
Provider details
- NPI number
- 1912936907
- Entity type
- Individual
- Primary specialty
- Infectious Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 29596 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
920 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 459 | $114 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 172 | $76 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 163 | $166 |
| Critical Care, First 30-74 Minutes99291 | 93 | $203 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 33 | $125 |
Typical Medicare-allowed amounts for these services range $76–$203 (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 · 7 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Cefazolin Sodium | 39 |
| Daptomycin | 35 |
| Ceftriaxone Sodiumbrand: Ceftriaxone | 24 |
| Vancomycin Hcl | 24 |
| Cefepime Hcl | 14 |
| Meropenem | 12 |
| Ampicillin Sod/Sulbactam Sodbrand: Unasyn | 12 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-02
- Last updated
- 2012-04-16
Frequently asked questions
- What is Marcelo Nasif's NPI number?
- Marcelo Nasif's National Provider Identifier (NPI) is 1912936907, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcelo Nasif's specialty?
- Marcelo Nasif is listed in the NPPES registry with a primary specialty of Infectious Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Marcelo Nasif located?
- Marcelo Nasif's practice location on file with NPPES is 5230 E Farness Dr, Tucson, AZ 85712-2141.
- What is Marcelo Nasif's phone number?
- The practice phone number listed in the NPPES registry for Marcelo Nasif is (520) 318-9681.
- Does Marcelo Nasif accept Medicare?
- Marcelo Nasif is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcelo Nasif's NPI active?
- Yes — Marcelo Nasif's NPI (1912936907) is active in the NPPES registry as of the last update on 2012-04-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.