DOUGLAS S MICALIZZI MD, PHD
NPI 1356604037
Internal Medicine - Medical Oncology in Boston, MA

Active since June 19, 2012PECOS EnrolledAccepts Medicare Assignment

NPPES record last updated: December 31, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 31, 2025, Dec 22, 2025, May 1, 2018 (3 updates tracked since 2018).

About Douglas S Micalizzi Md, Phd NPPES

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

DOUGLAS S MICALIZZI MD, PHD (NPI 1356604037) is an individual medical oncology provider in Boston, Massachusetts, licensed in Massachusetts (258808) and active in the NPI registry since June 2012. He is enrolled in Medicare PECOS, is affiliated with Massachusetts General Hospital, and maintains a secondary practice location in Boston.

NPPES Registry Identity

NPI1356604037
Entity TypeIndividualMale
Primary Taxonomy207RX0202X
Provider Legal NameDOUGLAS S MICALIZZICredential: MD, PHD
Location Address55 FRUIT STBoston, MA 02114-2621
Mailing Address55 Fruit StBoston, MA 02114-2621
Sole ProprietorNo
Medical School CMSUniversity Of Colorado School Of Medicine, DenverGraduated 2012
Enumeration DateJune 19, 2012
Last NPPES UpdateDecember 31, 20253 updates tracked since enumeration
NPPES CertifiedDecember 31, 2025
NPI 1356604037 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyInternal Medicine · Medical OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RX0202X
License Licensed in MA · 258808
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.
Also ListedInternal Medicine · Hematology & OncologyTaxonomy 207RH0003X · License 258808 (MA)
55 FRUIT ST, Boston, MA 02114

Secondary Practice Location 1

Location 175 Francis StBoston, MA 02115-6110 · Phone (617) 732-5500

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

Douglas S Micalizzi Md, Phd 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 ID1658525183
PECOS Enrollment IDI20180730003207
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.

Areas of Expertise CMS Part B claims 3

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.
117 services36 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.
44 services34 patients
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.
33 services27 patients

Hospital Affiliations CMS Care Compare 3

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

Newton-Wellesley Hospital

Acute Care Hospitals · Newton, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220101
Location2014 Washington StreetNewton, MA 02462 · Middlesex County
Emergency services Birthing friendly

Brigham And Women's Hospital

Acute Care Hospitals · Boston, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220110
Location75 Francis StreetBoston, MA 02115 · Suffolk County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02114 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
$189.86 typical visit price
range $63.72 – $189.86
Typical copayment $47.46 (range $15.93 – $47.46)
Most-billed visit code 99205
Established Patient
$111.18 typical visit price
range $21.07 – $155.29
Typical copayment $27.79 (range $5.26 – $38.82)
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.

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.

Pathology (Anatomic Pathology)
55 FRUIT ST
BOSTON, MA 02114
Internal Medicine (Hematology & Oncology)
55 FRUIT ST
BOSTON, MA 02114
Anesthesiology
55 FRUIT ST, GRAY-BIGELOW 444
BOSTON, MA 02114
Physical Medicine & Rehabilitation
55 FRUIT ST
BOSTON, MA 02114
Internal Medicine (Infectious Disease)
55 FRUIT ST, DIVISION OF INFECTIOUS DISEASE, GRJ-504
BOSTON, MA 02114
Nurse Practitioner (Acute Care)
55 FRUIT ST, BIGALOW 852 F
BOSTON, MA 02114
Nurse Practitioner
55 FRUIT ST
BOSTON, MA 02114
Internal Medicine (Cardiovascular Disease)
55 FRUIT ST
BOSTON, MA 02114

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 Douglas Micalizzi's NPI number?

The NPI number for Douglas Micalizzi is 1356604037. It was assigned to this individual provider in the NPPES registry on June 19, 2012.

Where is Douglas Micalizzi located?

Douglas Micalizzi practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (855) 776-4224.

What is Douglas Micalizzi's specialty?

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

Is Douglas Micalizzi enrolled in Medicare?

Yes. Douglas Micalizzi 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 Douglas Micalizzi accept?

Health plans from Anthem Blue Cross and Blue Shield list Douglas Micalizzi 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 Douglas Micalizzi affiliated with any hospitals?

According to CMS data, Douglas Micalizzi is affiliated with Massachusetts General Hospital, Newton-Wellesley Hospital and Brigham And Women's Hospital.

When was this NPI record last updated?

The NPPES record for Douglas Micalizzi was last updated on December 31, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.