Sam Alnajjar, MD
NPI 1972612158 · Critical Care Medicine (Internal Medicine) Physician · Tucson, AZ
Enrolled with Medicare as Practitioner - Critical Care (intensivists) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sam Alnajjar, MD is a Critical Care Medicine (Internal Medicine) Physician provider in Tucson, AZ (NPI 1972612158).
Provider details
- NPI number
- 1972612158
- Entity type
- Individual
- Primary specialty
- Critical Care Medicine (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 41176 (AZ)
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 tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
632 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) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 518 | $203 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 63 | $111 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 51 | $75 |
Typical Medicare-allowed amounts for these services range $75–$203 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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.
Practice location
Mailing address
Additional practice locations (2)
- 6525 N Lost Dutchman DrParadise Valley, AZ 85253-4103Phone: (248) 767-1975Fax: (949) 437-3271
- 1122 Ne 13th StOklahoma City, OK 73117-1039Phone: (405) 271-4351Fax: (405) 271-8695
Registry dates
- Enumerated
- 2006-08-30
- Last updated
- 2023-07-17
- Certified
- 2023-07-17
Frequently asked questions
- What is Sam Alnajjar's NPI number?
- Sam Alnajjar's National Provider Identifier (NPI) is 1972612158, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sam Alnajjar's specialty?
- Sam Alnajjar is listed in the NPPES registry with a primary specialty of Critical Care Medicine (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Sam Alnajjar located?
- Sam Alnajjar's practice location on file with NPPES is 6200 N La Cholla Blvd, Tucson, AZ 85741-3529.
- What is Sam Alnajjar's phone number?
- The practice phone number listed in the NPPES registry for Sam Alnajjar is (480) 861-1415.
- Does Sam Alnajjar accept Medicare?
- Sam Alnajjar is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sam Alnajjar's NPI active?
- Yes — Sam Alnajjar's NPI (1972612158) is active in the NPPES registry as of the last update on 2023-07-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.