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DR. JAMES MATTHEW KOOMEY M.D.
NPI 1477531358
Internal Medicine - Medical Oncology in Plymouth, MA

Active since January 03, 2006PECOS EnrolledAccepts Medicare Assignment
275 SANDWICH ST, C/O CATHY GREY, PLYMOUTH, MA 02360(508) 830-2390(508) 830-2399 Get Directions Write a Review

NPPES record last updated: November 28, 2007. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. James Matthew Koomey M.d. NPPES

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

DR. JAMES MATTHEW KOOMEY M.D. (NPI 1477531358) is an individual medical oncology provider in Plymouth, Massachusetts, licensed in Massachusetts (155230) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, is affiliated with Beth Israel Deaconess Hospital Plymouth, and is a graduate of Other (1995).

NPPES Registry Identity

NPI1477531358
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameDR. JAMES MATTHEW KOOMEYCredential: M.D.
Location Address275 SANDWICH ST, C/O CATHY GREYPlymouth, MA 02360-2183
Mailing Address275 Sandwich St, C/o Cathy GreyPlymouth, MA 02360-2183 · (508) 830-2390 · Fax (508) 830-2399
Phone(508) 830-2390
Fax(508) 830-2399
Sole ProprietorNo
Medical School CMSOtherGraduated 1995
Enumeration DateJanuary 3, 2006
Last NPPES UpdateNovember 28, 2007
✔ NPI 1477531358 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License✔ Licensed in MA · 155230
Definition
An internist who specializes in the diagnosis and treatment of all types of cancer and other benign and malignant tumors. This specialist decides on and administers therapy for these malignancies as well as consults with surgeons and radiotherapists on other treatments for cancer.
275 SANDWICH ST, Plymouth, MA 02360
Open in Google Maps ↗

Other Identifiers 6

Medicare UPING67115MA
Other14734MA · Harvard Pilgrim
Other779429MA · Tufts Health Plan
OtherJ19174MA · Bcbsma
Medicare PINA23496MA
Medicaid3178391MA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Taro Health.Insurance ›

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. James Matthew Koomey M.d. 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 ID749455160
PECOS Enrollment IDI20111214000430
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 James Koomey reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Jordan Physician Associates, Inc.
Same address
Family Medicine
275 SANDWICH ST
Plymouth, MA 02360
  • Reassigned Medicare billing, Massachusetts enrollment
  • 239 clinicians in this Medicare group
NPI 1538145131 (508) 830-2401

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 8

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.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
602 services276 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
234 services98 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
176 services134 patients
New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more 99205
This is a first-time patient visit where a healthcare professional spends 60-74 minutes with you. It involves a comprehensive evaluation, including your medical history and current health condition. They'll also advise on preventive health measures and formulate a treatment plan if needed.
44 services44 patients
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
16 services11 patients
Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
13 services13 patients

Hospital Affiliations CMS Care Compare

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

Beth Israel Deaconess Hospital Plymouth

Acute Care Hospitals · Plymouth, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220060
Location275 Sandwich StreetPlymouth, MA 02360 · Plymouth County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02360 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
$177.36 typical visit price
range $58.86 – $177.36
Typical copayment $44.34 (range $14.71 – $44.34)
Most-billed visit code 99205
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

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

Capecitabine, oral, 500 mg J8521
Treatment-Treatment - Miscellaneous · category RX029N
1 supplier12 claims812 services$0.58 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.

MISS ALEXANDRA STORB KIMBALL OTR/L
Occupational Therapist
275 SANDWICH ST
PLYMOUTH, MA 02360
Plymouth County (508) 732-8700
COREY SIGNS CNM
Advanced Practice Midwife
275 SANDWICH ST
PLYMOUTH, MA 02360
Plymouth County (508) 746-2000
PATRICK LINEHAN CRNA
Nurse Anesthetist, Certified Registered
275 SANDWICH ST
PLYMOUTH, MA 02360
Plymouth County (508) 830-2113
DR. IRINA GUREVICH M.D.
Internal Medicine (Hematology & Oncology)
275 SANDWICH ST, C/O CATHY GREY
PLYMOUTH, MA 02360
Plymouth County (508) 830-2390
DR. EDGAR HENRY BALLENAS M.D.
General Acute Care Hospital (Rural)
275 SANDWICH ST
PLYMOUTH, MA 02360
Plymouth County (508) 830-2800
BETH ISRAEL DEACONESS HOSPITAL PLYMOUTH, INC.
Psychiatric Unit
275 SANDWICH ST
PLYMOUTH, MA 02360
Plymouth County (508) 746-2000
CHRISTINA LIQUORI FNP-C
Nurse Practitioner (Family)
275 SANDWICH ST
PLYMOUTH, MA 02360
Plymouth County (508) 746-2000
MS. EMILY ANN BUMPUS
Physician Assistant
275 SANDWICH ST
PLYMOUTH, MA 02360
Plymouth County (508) 746-2000

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 James Koomey's NPI number?

The NPI number for James Koomey is 1477531358. It was assigned to this individual provider in the NPPES registry on January 3, 2006.

Where is James Koomey located?

James Koomey practices at 275 Sandwich St C/O Cathy Grey, Plymouth, MA 02360. The listed phone number is (508) 830-2390.

What is James Koomey's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Medical Oncology, with taxonomy code 207RX0202X.

Is James Koomey enrolled in Medicare?

Yes. James Koomey 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 James Koomey's services?

According to the CMS Revalidation Reassignment List (October 2026 release), James Koomey reassigns Medicare benefits to Jordan Physician Associates, Inc. (Plymouth, MA). 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 James Koomey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does James Koomey accept?

Health plans from Taro Health list James Koomey 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 James Koomey affiliated with any hospitals?

According to CMS data, James Koomey is affiliated with Beth Israel Deaconess Hospital Plymouth.

When was this NPI record last updated?

The NPPES record for James Koomey was last updated on November 28, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.