DR. MARTIN GARY GROFF PH.D.
NPI 1861545196
Psychologist - Clinical in Indianapolis, IN
About Dr. Martin Gary Groff Ph.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. MARTIN GARY GROFF PH.D. (NPI 1861545196) is an individual clinical provider in Indianapolis, Indiana, licensed in Indiana (20010411A) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and is a graduate of Other (1980).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 3
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. Martin Gary Groff Ph.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Martin Groff reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Indianapolis, IN 46260
- Reassigned Medicare billing, Indiana enrollment
- 9 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 46260 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Martin Groff's NPI number?
The NPI number for Martin Groff is 1861545196. It was assigned to this individual provider in the NPPES registry on January 19, 2007.
Where is Martin Groff located?
Martin Groff practices at 9240 N Meridian St Ste 320, Indianapolis, IN 46260. The listed phone number is (317) 844-7489.
What is Martin Groff's specialty?
The primary specialty registered for this NPI is Psychologist, specializing in Clinical, with taxonomy code 103TC0700X.
Is Martin Groff enrolled in Medicare?
Yes. Martin Groff is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Martin Groff's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Martin Groff reassigns Medicare benefits to Health Associates Indy (Indianapolis, IN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Martin Groff's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Martin Groff accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Anthem Blue Cross and Blue Shield and CareSource and 2 other insurers list Martin Groff as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Martin Groff was last updated on July 8, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. Martin Gary Groff, PH.D. · NPI 1861545196
Clinical provider in Indianapolis, Indiana. Individual provider, active in the CMS NPPES registry since January 19, 2007.
## Identity
- **NPI:** 1861545196 (Entity type: Individual)
- **Enumerated:** January 19, 2007
- **Primary specialty:** Psychologist - Clinical · taxonomy 103TC0700X
- **State license:** 20010411A (Indiana)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 9240 N MERIDIAN ST STE 320, Indianapolis, IN 46260-1822
- **Phone:** (317) 844-7489 · **Fax:** (317) 581-1007
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment
- **Bills Medicare through:** Health Associates Indy (NPI 1578253233, Indianapolis, IN), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1980
## Record status
- **NPPES last updated:** July 8, 2007
- **Other identifiers:** Medicare ID-Type Unspecified 275620 (IN); Other 7581142 (IN); Other 000000182487 (IN)
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Source: [NPI Profile](https://npiprofile.com/npi/1861545196) · Data from the CMS NPPES public registry.