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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MARK CHROSTOWSKI M.D.
NPI 1558317040
Anesthesiology in Boston, MA

Active since May 26, 2006PECOS Enrolled
55 FRUIT STREET, CLINIC 3, MASSACHUSETTS GENERAL, BOSTON, MA 02114(617) 524-1939 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Mark Chrostowski M.d. NPPES

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

MARK CHROSTOWSKI M.D. (NPI 1558317040) is an individual anesthesiology provider in Boston, Massachusetts, licensed in Massachusetts (228369) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of Js Weill Medical College, Cornell University (2004).

NPPES Registry Identity

NPI1558317040
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameMARK CHROSTOWSKICredential: M.D.
Location Address55 FRUIT STREET, CLINIC 3, MASSACHUSETTS GENERALBoston, MA 02114
Mailing Address50 Lila RdJamaica Plain, MA 02130-3448 · (617) 524-1939
Phone(617) 524-1939
Sole ProprietorNo
Medical School CMSJs Weill Medical College, Cornell UniversityGraduated 2004
Enumeration DateMay 26, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1558317040 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in MA · 228369
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
55 FRUIT STREET, CLINIC 3, Boston, MA 02114
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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

Mark Chrostowski 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 ID648375410
PECOS Enrollment IDI20080724000232
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 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.

Anesthesia for lens surgery 00142
Anesthesia for lens surgery involves administering medication to numb the eye area, ensuring you feel no pain during the procedure. This can be a local anesthetic (numbing only the eye area) or general (where you're asleep). It helps make the surgery comfortable and stress-free.
46 services44 patients
Anesthesia for total hip replacement 01214
Anesthesia for total hip replacement is a medical service where medication is given to eliminate pain during surgery. Two types are commonly used: general anesthesia, making you unconscious, or spinal anesthesia, numbing the lower body. The choice depends on your health and your doctor's recommendation.
19 services19 patients
Anesthesia for other procedure on large bowel using an endoscope 00811
Anesthesia for an endoscopic procedure on the large bowel ensures comfort and relaxation during the procedure. You'll be given medication to make you drowsy or asleep, eliminating any discomfort. The medication can be administered through a vein or inhaled.
16 services16 patients
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
14 services14 patients

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 Mark Chrostowski's NPI number?

The NPI number for Mark Chrostowski is 1558317040. It was assigned to this individual provider in the NPPES registry on May 26, 2006.

Where is Mark Chrostowski located?

Mark Chrostowski practices at 55 Fruit Street, Clinic 3 Massachusetts General, Boston, MA 02114. The listed phone number is (617) 524-1939.

What is Mark Chrostowski's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Mark Chrostowski enrolled in Medicare?

Yes. Mark Chrostowski 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.

When was this NPI record last updated?

The NPPES record for Mark Chrostowski was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 25 days 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.