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KATHRYN TWOMEY MD
NPI 1063755817
Surgery - Surgical Critical Care in Boston, MA

Active since March 30, 2013PECOS EnrolledAccepts Medicare Assignment
725 ALBANY STREET, SHAPIRO 3 SUITE A, BOSTON, MA 02118(617) 414-4861(617) 414-3617 Get Directions Write a Review

NPPES record last updated: August 30, 2019. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Aug 30, 2019, Jul 12, 2019, Oct 29, 2018 (3 updates tracked since 2018).

About Kathryn Twomey Md NPPES

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

KATHRYN TWOMEY MD (NPI 1063755817) is an individual surgical critical care provider in Boston, Massachusetts, licensed in Massachusetts (274976) and active in the NPI registry since March 2013. She is enrolled in Medicare PECOS, is affiliated with Boston Medical Center, and is a graduate of Rutgers R W Johnson Medical School (cam/new Bruns/pisc) (2013).

NPPES Registry Identity

NPI1063755817
Entity TypeIndividualFemale
Primary Taxonomy2086S0102X
Provider Legal NameKATHRYN TWOMEYCredential: MD
Location Address725 ALBANY STREET, SHAPIRO 3 SUITE ABoston, MA 02118
Mailing Address720 Harrison Avenue, Dob 503Boston, MA 02118-2371
Phone(617) 414-4861
Fax(617) 414-3617
Sole ProprietorNo
Medical School CMSRutgers R W Johnson Medical School (cam/new Bruns/pisc)Graduated 2013
Enumeration DateMarch 30, 2013
Last NPPES UpdateAugust 30, 20193 updates tracked since enumeration
✔ NPI 1063755817 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgery · Surgical Critical CareAllopathic & Osteopathic Physicians
Taxonomy Code2086S0102X
License✔ Licensed in MA · 274976
Definition
A surgeon with expertise in the management of the critically ill and postoperative patient, particularly the trauma victim, who specializes in critical care medicine diagnoses, treats and supports patients with multiple organ dysfunction. This specialist may have administrative responsibilities for intensive care units and may also facilitate and coordinate patient care among the primary physician, the critical care staff and other specialists.
Also ListedSurgeryTaxonomy 208600000X · License 274976 (MA)
725 ALBANY STREET, Boston, MA 02118
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Other Identifiers 1

Medicaid110117657AMA

Accepted Insurance

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

Kathryn Twomey 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 ID3971722364
PECOS Enrollment IDI20181115002800
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 Reassignments

4

Medicare enrollment records show Kathryn Twomey reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Boston University General Surgical Associates, Inc.
0.2 mi
Surgery
1 BOSTON MEDICAL CTR PL # C500
Boston, MA 02118
  • Reassigned Medicare billing, Massachusetts enrollment
  • 102 clinicians in this Medicare group
NPI 1104865567 (617) 638-8605
Bmc Affiliated Physicians, Inc.
0.2 mi
Internal Medicine
1 BOSTON MEDICAL CENTER PLACE
Boston, MA 02118
  • Reassigned Medicare billing, Massachusetts enrollment
  • 716 clinicians in this Medicare group
NPI 1245320910 (617) 789-3000
Steward Medical Group, Inc
6.1 mi
Specialist
9 GALEN ST
Watertown, MA 02472
  • Reassigned Medicare billing, Massachusetts enrollment
  • 1,103 clinicians in this Medicare group
NPI 1629398219 (615) 467-4474
Physicians Of Cape Cod Hospital
62 mi
Neuroradiology
27 PARK ST
Hyannis, MA 02601
  • Reassigned Medicare billing, Massachusetts enrollment
  • 678 clinicians in this Medicare group
NPI 1679832364 (508) 957-8667

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 6

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 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.
175 services101 patients
Critical care, first 30-74 minutes 99291
Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.
45 services32 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.
43 services42 patients
Subsequent hospital care with straightforward or low level of medical decision making, per day, if using time, at least 25 minutes 99231
Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.
15 services11 patients
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.
13 services12 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.
11 services11 patients

Hospital Affiliations CMS Care Compare 2

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

Boston Medical Center

Acute Care Hospitals · Boston, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220031
Location1 Boston Medical Center PlaceBoston, MA 02118 · Suffolk County
Emergency services Birthing friendly

St Elizabeth's Medical Center

Acute Care Hospitals · Brighton, MA
2/5 CMS rating
OwnershipProprietary
CMS Certification Number220036
Location736 Cambridge StreetBrighton, MA 02135 · Suffolk County
Emergency services Birthing friendly

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.

MR. TIMOTHY MICHAEL BRITT PA-C
Physician Assistant
725 ALBANY STREET, SHAPIRO 4, SUITE B
BOSTON, MA 02118
Suffolk County (617) 638-5633
DR. DAVID M. GREER MD
Psychiatry & Neurology (Vascular Neurology)
725 ALBANY STREET, SHAPIRO 7, SUITE B
BOSTON, MA 02118
Suffolk County (617) 638-8456
HORMUZDIYAR HENRY DASENBROCK MD
Neurological Surgery
725 ALBANY STREET, SHAPIRO 7, SUITE C
BOSTON, MA 02118
Suffolk County (617) 638-8992
JUAN-PABLO LOPEZ-ZERTUCHE ORTIZ M.D.
Internal Medicine (Rheumatology)
725 ALBANY STREET, SUITE 6B, SHAPIRO BLDG
BOSTON, MA 02118
Suffolk County (617) 638-7460
DR. DEBJANI SAHNI M.D.
Dermatology
725 ALBANY STREET, SHAPIRO 8
BOSTON, MA 02118
Suffolk County (617) 638-7420
POOJA R. RAVAL M.D.
Internal Medicine
725 ALBANY STREET, SHAPIRO 5 & 6
BOSTON, MA 02118
Suffolk County (617) 414-5951
ARTHUR ROLAND CELESTIN M.D.
Surgery (Plastic and Reconstructive Surgery)
725 ALBANY STREET, SUITE 8A, SHAPIRO BUILDING
BOSTON, MA 02118
Suffolk County (617) 638-8419
SEAN DOHERTY PA-C
Physician Assistant (Surgical)
725 ALBANY STREET, SHAPIRO 3, SUITE A
BOSTON, MA 02118
Suffolk County (617) 414-4861

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 Kathryn Twomey's NPI number?

The NPI number for Kathryn Twomey is 1063755817. It was assigned to this individual provider in the NPPES registry on March 30, 2013.

Where is Kathryn Twomey located?

Kathryn Twomey practices at 725 Albany Street Shapiro 3 Suite A, Boston, MA 02118. The listed phone number is (617) 414-4861.

What is Kathryn Twomey's specialty?

The primary specialty registered for this NPI is Surgery, specializing in Surgical Critical Care, with taxonomy code 2086S0102X.

Is Kathryn Twomey enrolled in Medicare?

Yes. Kathryn Twomey 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 Kathryn Twomey's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kathryn Twomey reassigns Medicare benefits to 4 organizations: Boston University General Surgical Associates, Inc. (Boston, MA), Bmc Affiliated Physicians, Inc. (Boston, MA), Steward Medical Group, Inc (Watertown, MA) and Physicians Of Cape Cod Hospital (Hyannis, MA). 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 Kathryn Twomey's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kathryn Twomey accept?

Health plans from Taro Health and WellSense Health Plan list Kathryn Twomey 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 Kathryn Twomey affiliated with any hospitals?

According to CMS data, Kathryn Twomey is affiliated with Boston Medical Center and St Elizabeth's Medical Center.

When was this NPI record last updated?

The NPPES record for Kathryn Twomey was last updated on August 30, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.