MARGARET M. KOEHM MD
NPI 1255315545
Family Medicine in Nantucket, MA

Active since December 01, 2005PECOS EnrolledAccepts Medicare Assignment
57 PROSPECT ST, NANTUCKET, MA 02554(508) 325-9981(508) 325-8558 Get Directions Write a Review

NPPES record last updated: January 16, 2018. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Margaret M. Koehm Md NPPES

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

MARGARET M. KOEHM MD (NPI 1255315545) is an individual family medicine provider in Nantucket, Massachusetts, licensed in Massachusetts (213100) and active in the NPI registry since December 2005. She is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and is a graduate of Other (1995).

NPPES Registry Identity

NPI1255315545
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameMARGARET M. KOEHMCredential: MD
Location Address57 PROSPECT STNantucket, MA 02554-2799
Mailing Address57 Prospect StNantucket, MA 02554-2799 · (508) 325-9981 · Fax (508) 325-8558
Fax(508) 325-8558
Sole ProprietorNo
Medical School CMSOtherGraduated 1995
Enumeration DateDecember 1, 2005
Last NPPES UpdateJanuary 16, 2018
NPI 1255315545 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses Licensed in MA · 213100 Licensed in RI · MD213100
Definition

Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.

57 PROSPECT ST, Nantucket, MA 02554

Other Identifiers 1

Medicaid9022680RI

Accepted Insurance

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare and accepts Medicare assignment

Margaret M. Koehm 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.

PECOS PAC ID1557446416
PECOS Enrollment IDI20090901000011
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.

Hospital Affiliations CMS Care Compare 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Massachusetts General Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220071
Location55 Fruit StreetBoston, MA 02114 · Suffolk County
Emergency services Birthing friendly

Nantucket Cottage Hospital

Acute Care Hospitals · Nantucket, MA
OwnershipVoluntary non-profit - Private
CMS Certification Number220177
Location57 Prospect StreetNantucket, MA 02554 · Nantucket County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02554 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
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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.

Referred Medical Equipment & Supplies CMS DME claims 3

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

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
1 supplier12 claims12 services$119.41 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$38.23 avg. paid by Medicare
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service K0553
DME-Other DME · category DE017N
2 suppliers12 claims12 services$207.14 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.

Nurse Practitioner (Family)
57 PROSPECT ST
NANTUCKET, MA 02554
Nurse Practitioner (Adult Health)
57 PROSPECT ST
NANTUCKET, MA 02554
Dietitian, Registered
57 PROSPECT ST
NANTUCKET, MA 02554
Clinic/Center (End-Stage Renal Disease (ESRD) Treatment)
57 PROSPECT ST
NANTUCKET, MA 02554
Surgery (Plastic and Reconstructive Surgery)
57 PROSPECT ST
NANTUCKET, MA 02554
Internal Medicine
57 PROSPECT ST
NANTUCKET, MA 02554
Specialist
57 PROSPECT ST
NANTUCKET, MA 02554
Nurse Practitioner (Family)
57 PROSPECT ST
NANTUCKET, MA 02554

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 Margaret Koehm's NPI number?

The NPI number for Margaret Koehm is 1255315545. It was assigned to this individual provider in the NPPES registry on December 1, 2005.

Where is Margaret Koehm located?

Margaret Koehm practices at 57 Prospect St, Nantucket, MA 02554. The listed phone number is (508) 325-9981.

What is Margaret Koehm's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Margaret Koehm enrolled in Medicare?

Yes. Margaret Koehm 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.

What insurance does Margaret Koehm accept?

Health plans from Anthem Blue Cross and Blue Shield list Margaret Koehm 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.

Is Margaret Koehm affiliated with any hospitals?

According to CMS data, Margaret Koehm is affiliated with Massachusetts General Hospital and Nantucket Cottage Hospital.

When was this NPI record last updated?

The NPPES record for Margaret Koehm was last updated on January 16, 2018. NPI Profile syncs with the weekly NPPES data releases published by CMS.