Deepak Thiagarajan, a Professional Medical Corporation
NPI 1043658644 · Internal Medicine Physician · Rancho Cucamonga, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Deepak Thiagarajan, a Professional Medical Corporation is a Internal Medicine Physician organization in Rancho Cucamonga, CA (NPI 1043658644).
Provider details
- NPI number
- 1043658644
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Deepak Thiagarajan, Owner(909) 921-3920
- License
- A113059 (CA)
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
13 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
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
Additional practice locations (1)
- 2101 N Waterman AveSan Bernardino, CA 92404-4836Phone: (909) 921-3920
Registry dates
- Enumerated
- 2013-06-05
- Last updated
- 2024-04-04
- Certified
- 2024-04-04
Frequently asked questions
- What is Deepak Thiagarajan, a Professional Medical Corporation's NPI number?
- Deepak Thiagarajan, a Professional Medical Corporation's National Provider Identifier (NPI) is 1043658644, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Deepak Thiagarajan, a Professional Medical Corporation?
- Deepak Thiagarajan, a Professional Medical Corporation is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Deepak Thiagarajan, a Professional Medical Corporation located?
- Deepak Thiagarajan, a Professional Medical Corporation's practice location on file with NPPES is 7974 Haven Ave Ste 210, Rancho Cucamonga, CA 91730-3052.
- What is Deepak Thiagarajan, a Professional Medical Corporation's phone number?
- The practice phone number listed in the NPPES registry for Deepak Thiagarajan, a Professional Medical Corporation is (909) 881-5994.
- Does Deepak Thiagarajan, a Professional Medical Corporation accept Medicare?
- Deepak Thiagarajan, a Professional Medical Corporation is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Deepak Thiagarajan, a Professional Medical Corporation?
- The authorized official listed on Deepak Thiagarajan, a Professional Medical Corporation's NPPES record is Deepak Thiagarajan, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Deepak Thiagarajan, a Professional Medical Corporation's NPI active?
- Yes — Deepak Thiagarajan, a Professional Medical Corporation's NPI (1043658644) is active in the NPPES registry as of the last update on 2024-04-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.