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DR. THOMAS FROHWEIN M.D.
NPI 1275941148
Internal Medicine in Farmington, ME

Active since July 23, 2014PECOS Enrolled
74.39/100
CMS Quality Rating
111 FRANKLIN HEALTH CMNS, FARMINGTON, ME 04938(207) 779-2456(207) 779-2496 Get Directions Write a Review

NPPES record last updated: July 10, 2024. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jul 10, 2024, Aug 31, 2022, May 8, 2019 and 1 more (4 updates tracked since 2019).

About Dr. Thomas Frohwein M.d. NPPES

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

DR. THOMAS FROHWEIN M.D. (NPI 1275941148) is an individual internal medicine provider in Farmington, Maine, licensed in Maine (MD28018) and active in the NPI registry since July 2014. He is enrolled in Medicare PECOS and maintains a secondary practice location in Baltimore.

NPPES Registry Identity

NPI1275941148
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. THOMAS FROHWEINCredential: M.D.
Location Address111 FRANKLIN HEALTH CMNSFarmington, ME 04938-6144
Mailing Address111 Franklin Health CmnsFarmington, ME 04938-6144 · (207) 779-2456 · Fax (207) 779-2496
Phone(207) 779-2456
Fax(207) 779-2496
Sole ProprietorNo
Enumeration DateJuly 23, 2014
Last NPPES UpdateJuly 10, 20244 updates tracked since enumeration
NPPES CertifiedJuly 10, 2024
✔ NPI 1275941148 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
Licenses✔ Licensed in ME · MD28018✔ Licensed in MD · D94141✔ Licensed in MT · 70063
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 ListedHospitalistTaxonomy 208M00000X · License MD28018 (ME)
111 FRANKLIN HEALTH CMNS, Farmington, ME 04938
Open in Google Maps ↗

Secondary Practice Location 1

Location 15200 Eastern Ave Fl Tower2Baltimore, MD 21224-2734 · Phone (410) 550-5018 · Fax (410) 550-2972

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Thomas Frohwein M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

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

Mainehealth
Same address
Critical Access
111 FRANKLIN HEALTH CMNS
Farmington, ME 04938
  • Reassigned Medicare billing, Maine enrollment
  • 220 clinicians in this Medicare group
NPI 1922791417 (207) 779-2784

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 4

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.

Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
185 services93 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
64 services40 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
29 services29 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
26 services25 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 04938 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$123.23 typical visit price
range $53.26 – $162.77
Typical copayment $30.80 (range $13.31 – $40.69)
Most-billed visit code 99204
Established Patient
$94.60 typical visit price
range $16.90 – $132.79
Typical copayment $23.65 (range $4.22 – $33.19)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

74.39/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality64.71
Promoting Interoperability97
Improvement Activities40
Cost52.43

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
3 suppliers36 claims42 services$20.36 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
2 suppliers32 claims33 services$111.89 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

JESSE BUTLER MD
Emergency Medicine
111 FRANKLIN HEALTH CMNS
FARMINGTON, ME 04938
Franklin County (207) 778-6031
CHANEY WAHL RN
Registered Nurse
111 FRANKLIN HEALTH CMNS
FARMINGTON, ME 04938
Franklin County (207) 491-1014
JODI ALEXIS CONRAD D.O.
Emergency Medicine
111 FRANKLIN HEALTH CMNS
FARMINGTON, ME 04938
Franklin County (207) 778-6031
PAULA DESPRES MSOT, OTR/L
Occupational Therapist (Physical Rehabilitation)
111 FRANKLIN HEALTH CMNS
FARMINGTON, ME 04938
Franklin County (207) 778-6031
DR. LARRY B LABUL DO
Hospitalist
111 FRANKLIN HEALTH CMNS
FARMINGTON, ME 04938
Franklin County (207) 778-6031
SAMANTHA ELLIS
Registered Nurse (Emergency)
111 FRANKLIN HEALTH CMNS
FARMINGTON, ME 04938
Franklin County (207) 779-2250
DR. AARON SAMUEL RATNER DO, MS
Emergency Medicine
111 FRANKLIN HEALTH CMNS
FARMINGTON, ME 04938
Franklin County (207) 778-6031
DR. VIVIAM SKARLETH TREJO MD
Emergency Medicine
111 FRANKLIN HEALTH CMNS
FARMINGTON, ME 04938
Franklin County (207) 778-6031

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 Thomas Frohwein's NPI number?

The NPI number for Thomas Frohwein is 1275941148. It was assigned to this individual provider in the NPPES registry on July 23, 2014.

Where is Thomas Frohwein located?

Thomas Frohwein practices at 111 Franklin Health Cmns, Farmington, ME 04938. The listed phone number is (207) 779-2456.

What is Thomas Frohwein's specialty?

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

Is Thomas Frohwein enrolled in Medicare?

Yes. Thomas Frohwein is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Thomas Frohwein's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Frohwein reassigns Medicare benefits to Mainehealth (Farmington, ME). 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 Thomas Frohwein'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 Thomas Frohwein was last updated on July 10, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.