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FREDERICK KEYSER WIESE M.D.
NPI 1194739672
Internal Medicine in Canaan, NH

Active since July 28, 2006
18 ROBERTS ROAD, CANAAN, NH 03741(603) 523-4343(603) 523-4502 Get Directions Write a Review

NPPES record last updated: December 21, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Dec 21, 2019, Jun 21, 2019 (2 updates tracked since 2019).

About Frederick Keyser Wiese M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

FREDERICK KEYSER WIESE M.D. (NPI 1194739672) is an individual internal medicine provider in Canaan, New Hampshire, licensed in New Hampshire (6868) and active in the NPI registry since July 2006.

NPPES Registry Identity

NPI1194739672
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameFREDERICK KEYSER WIESECredential: M.D.
Location Address18 ROBERTS ROADCanaan, NH 03741
Mailing Address18 Roberts RoadCanaan, NH 03741-1079 · (603) 523-4343 · Fax (603) 523-4502
Phone(603) 523-4343
Fax(603) 523-4502
Sole ProprietorNo
Enumeration DateJuly 28, 2006
Last NPPES UpdateDecember 21, 20192 updates tracked since enumeration
✔ NPI 1194739672 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NH · 6868
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedInternal Medicine · Cardiovascular DiseaseTaxonomy 207RC0000X · License 6868 (NH)
18 ROBERTS ROAD, Canaan, NH 03741
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Frederick Keyser Wiese M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Medicare Billing Reassignment

Medicare enrollment records show Frederick Wiese reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Mascoma Community Healthcare Inc
Same address
Dental
18 ROBERTS ROAD
Canaan, NH 03741
  • Reassigned Medicare billing, New Hampshire enrollment
  • 9 clinicians in this Medicare group
NPI 1497298087 (603) 523-4501

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

MASCOMA COMMUNITY HEALTHCARE INC
Clinic/Center (Dental)
18 ROBERTS ROAD
CANAAN, NH 03741
Grafton County (603) 523-4501
MR. KARL WILSON STANFORD APRN
Nurse Practitioner (Family)
18 ROBERTS ROAD
CANAAN, NH 03741
Grafton County (603) 523-4343

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 Frederick Wiese's NPI number?

The NPI number for Frederick Wiese is 1194739672. It was assigned to this individual provider in the NPPES registry on July 28, 2006.

Where is Frederick Wiese located?

Frederick Wiese practices at 18 Roberts Road, Canaan, NH 03741. The listed phone number is (603) 523-4343.

What is Frederick Wiese's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Frederick Wiese enrolled in Medicare?

Yes. Frederick Wiese is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Frederick Wiese's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Frederick Wiese reassigns Medicare benefits to Mascoma Community Healthcare Inc (Canaan, NH). 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 Frederick Wiese'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 Frederick Wiese was last updated on December 21, 2019. 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.