DR. GRETCHEN L. HERMES M.D./PHD./MTS
NPI 1710161948
Psychiatry & Neurology - Psychiatry in New London, CT
About Dr. Gretchen L. Hermes M.d./phd./mts NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. GRETCHEN L. HERMES M.D./PHD./MTS (NPI 1710161948) is an individual psychiatry provider in New London, Connecticut, licensed in Connecticut (048150) and active in the NPI registry since December 2007. She is enrolled in Medicare PECOS, maintains a secondary practice location in Wallingford, and is a graduate of Other (2007).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
Other Identifiers 3
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. Gretchen L. Hermes M.d./phd./mts 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 Reassignments
3Medicare enrollment records show Gretchen Hermes reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Wallingford, CT 06492
- Reassigned Medicare billing, Connecticut enrollment
- 84 clinicians in this Medicare group
New Haven, CT 06511
- Reassigned Medicare billing, Connecticut enrollment
- 3,728 clinicians in this Medicare group
New Haven, CT 06510
- Reassigned Medicare billing, Connecticut enrollment
- Medicare enrollment name: Northeast Medical Group Inc
- 1,824 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 06320 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEW LONDON, CT 06320
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 Gretchen Hermes's NPI number?
The NPI number for Gretchen Hermes is 1710161948. It was assigned to this individual provider in the NPPES registry on December 24, 2007.
Where is Gretchen Hermes located?
Gretchen Hermes practices at 365 Montauk Ave, New London, CT 06320. The listed phone number is (203) 688-0715.
What is Gretchen Hermes's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is Gretchen Hermes enrolled in Medicare?
Yes. Gretchen Hermes 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 organizations bill Medicare for Gretchen Hermes's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gretchen Hermes reassigns Medicare benefits to 3 organizations: Gaylord Hospital, Inc. (Wallingford, CT), Yale University (New Haven, CT) and Mill Hill Medical Consultants Inc (New Haven, CT). Each 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 Gretchen Hermes's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Gretchen Hermes was last updated on September 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 38 days 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. Gretchen L. Hermes, M.D./PHD./MTS · NPI 1710161948
Psychiatry physician in New London, Connecticut. Individual provider, active in the CMS NPPES registry since December 24, 2007.
## Identity
- **NPI:** 1710161948 (Entity type: Individual)
- **Enumerated:** December 24, 2007
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 048150 (Connecticut)
- **Sole proprietor:** No
## Practice location
- **Address:** 365 MONTAUK AVE, New London, CT 06320-4700
- **Phone:** (203) 688-0715
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Gaylord Hospital, Inc. (NPI 1730137753, Wallingford, CT); Yale University (NPI 1205822236, New Haven, CT); Mill Hill Medical Consultants Inc (NPI 1952624769, New Haven, CT) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2007
## Record status
- **NPPES last updated:** September 28, 2026
- **Other identifiers:** Medicaid 004041000 (CT); Medicaid 008003745 (CT); Other 008039605 (CT)
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Source: [NPI Profile](https://npiprofile.com/npi/1710161948) · Data from the CMS NPPES public registry.