Internal Medicine,geriatrics and Oncology Group, P.C.
NPI 1417983537 · Internal Medicine Physician · Portage, IN
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Internal Medicine,geriatrics and Oncology Group, P.C. is a Internal Medicine Physician organization in Portage, IN (NPI 1417983537).
Provider details
- NPI number
- 1417983537
- Entity type
- Organization
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Diana Neumann, Billing Clerk(219) 464-4786
- License
- 01027933A (IN)
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
20 yrs 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
Other names (DBA / former)
- Former legal business name
- Shreyas A. Desai, M.D.
Registry dates
- Enumerated
- 2006-06-23
- Last updated
- 2014-07-18
Frequently asked questions
- What is Internal Medicine,geriatrics and Oncology Group, P.C.'s NPI number?
- Internal Medicine,geriatrics and Oncology Group, P.C.'s National Provider Identifier (NPI) is 1417983537, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Internal Medicine,geriatrics and Oncology Group, P.C.?
- Internal Medicine,geriatrics and Oncology Group, P.C. is classified in the NPPES registry as Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Internal Medicine,geriatrics and Oncology Group, P.C. located?
- Internal Medicine,geriatrics and Oncology Group, P.C.'s practice location on file with NPPES is 2640 Hamstrom Rd, Portage, IN 46368-3832.
- What is Internal Medicine,geriatrics and Oncology Group, P.C.'s phone number?
- The practice phone number listed in the NPPES registry for Internal Medicine,geriatrics and Oncology Group, P.C. is (219) 762-9523.
- Does Internal Medicine,geriatrics and Oncology Group, P.C. accept Medicare?
- Internal Medicine,geriatrics and Oncology Group, P.C. 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 Internal Medicine,geriatrics and Oncology Group, P.C.?
- The authorized official listed on Internal Medicine,geriatrics and Oncology Group, P.C.'s NPPES record is Diana Neumann, Billing Clerk. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Internal Medicine,geriatrics and Oncology Group, P.C.'s NPI active?
- Yes — Internal Medicine,geriatrics and Oncology Group, P.C.'s NPI (1417983537) is active in the NPPES registry as of the last update on 2014-07-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.