Khaja Siddiqui, MD
NPI 1649165036 · Internal Medicine Physician · Tucson, AZ
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Khaja Siddiqui, MD is a Internal Medicine Physician provider in Tucson, AZ (NPI 1649165036).
Provider details
- NPI number
- 1649165036
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- R82046 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
1 yr in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2025-06-09
- Last updated
- 2025-06-10
- Certified
- 2025-06-10
Frequently asked questions
- What is Khaja Siddiqui's NPI number?
- Khaja Siddiqui's National Provider Identifier (NPI) is 1649165036, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Khaja Siddiqui's specialty?
- Khaja Siddiqui is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Khaja Siddiqui located?
- Khaja Siddiqui's practice location on file with NPPES is 3601 S 6th Ave, Tucson, AZ 85723-0001.
- What is Khaja Siddiqui's phone number?
- The practice phone number listed in the NPPES registry for Khaja Siddiqui is (520) 792-1450.
- Does Khaja Siddiqui accept Medicare?
- Khaja Siddiqui is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Khaja Siddiqui's NPI active?
- Yes — Khaja Siddiqui's NPI (1649165036) is active in the NPPES registry as of the last update on 2025-06-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.