DR. FRANK G MARTINI MD
NPI 1588642136
Internal Medicine - Gastroenterology in Grayslake, IL
About Dr. Frank G Martini Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. FRANK G MARTINI MD (NPI 1588642136) is an individual gastroenterology provider in Grayslake, Illinois, licensed in Illinois (036067068) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Northwestern Medicine Mchenry, and maintains a secondary practice location in Lake Forest.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 1
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. Frank G Martini Md 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 Frank Martini reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Carol Stream, IL 60122
- Reassigned Medicare billing, Illinois enrollment
- 4,817 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 13
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.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northwestern Medicine Mchenry
Acute Care Hospitals · Mchenry, ILNorthwestern Lake Forest Hospital
Acute Care Hospitals · Lake Forest, ILNorthwestern Memorial Hospital
Acute Care Hospitals · Chicago, ILPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 60030 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GRAYSLAKE, IL 60030
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 Frank Martini's NPI number?
The NPI number for Frank Martini is 1588642136. It was assigned to this individual provider in the NPPES registry on January 4, 2006.
Where is Frank Martini located?
Frank Martini practices at 1475 E Belvidere Rd Ste 301, Grayslake, IL 60030. The listed phone number is (847) 535-6083.
What is Frank Martini's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Gastroenterology, with taxonomy code 207RG0100X.
Is Frank Martini enrolled in Medicare?
Yes. Frank Martini 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 Frank Martini's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Frank Martini reassigns Medicare benefits to Northwestern Medical Faculty Foundation (Carol Stream, IL). 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 Frank Martini's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Frank Martini affiliated with any hospitals?
According to CMS data, Frank Martini is affiliated with Northwestern Medicine Mchenry, Northwestern Lake Forest Hospital and Northwestern Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Frank Martini was last updated on July 9, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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. Frank G Martini, MD · NPI 1588642136
Gastroenterology physician in Grayslake, Illinois. Individual provider, active in the CMS NPPES registry since January 4, 2006.
## Identity
- **NPI:** 1588642136 (Entity type: Individual)
- **Enumerated:** January 4, 2006
- **Primary specialty:** Internal Medicine - Gastroenterology · taxonomy 207RG0100X
- **State license:** 036067068 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 1475 E BELVIDERE RD STE 301, Grayslake, IL 60030-2016
- **Phone:** (847) 535-6083 · **Fax:** (224) 271-4910
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Northwestern Medical Faculty Foundation (NPI 1346235314, Carol Stream, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1982
## Record status
- **NPPES last updated:** July 9, 2020
- **Other identifiers:** Medicaid 036067068 (IL)
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Source: [NPI Profile](https://npiprofile.com/npi/1588642136) · Data from the CMS NPPES public registry.