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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

MARK SPENCER MD
NPI 1508818097
Anesthesiology in Hartford, CT

Active since May 16, 2006PECOS Enrolled
114 WOODLAND ST, HARTFORD, CT 06105(860) 714-6654(860) 714-8110 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 Spencer Md NPPES

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

MARK SPENCER MD (NPI 1508818097) is an individual anesthesiology provider in Hartford, Connecticut, licensed in Connecticut (033719) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, is affiliated with Mercy Medical Ctr, and is a graduate of Georgetown University School Of Medicine (1991).

NPPES Registry Identity

NPI1508818097
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameMARK SPENCERCredential: MD
Location Address114 WOODLAND STHartford, CT 06105-1208
Mailing Address114 Woodland StHartford, CT 06105-1208 · (860) 714-6654 · Fax (860) 714-8110
Phone(860) 714-6654
Fax(860) 714-8110
Sole ProprietorNo
Medical School CMSGeorgetown University School Of MedicineGraduated 1991
Enumeration DateMay 16, 2006
Last NPPES UpdateJuly 13, 2026
✔ NPI 1508818097 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
License✔ Licensed in CT · 033719
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.
114 WOODLAND ST, Hartford, CT 06105
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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 Spencer 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 ID1254515125
PECOS Enrollment IDI20110418000853, I20180410002624
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 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.

Telephone medical discussion with physician, 21-30 minutes 99443
This service involves a 21-30 minute phone conversation with a physician. It's a chance for you to discuss your health concerns, symptoms or treatment plans. It's similar to an in-person consultation, but conducted over the phone for your convenience and safety.
32 services17 patients
Injection of substance into lower spine canal using imaging guidance 62323
This procedure involves injecting a substance into your lower spine canal, guided by real-time images. It's done to diagnose or treat various conditions. You may feel slight discomfort, but it's generally safe and can provide valuable information for your treatment plan.
28 services15 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.
25 services25 patients
Anesthesia for exam of colon using an endoscope 00812
Anesthesia for a colon examination with an endoscope is a method used to ensure comfort during the procedure. It involves administering medication to help you relax or sleep, thus reducing discomfort as the endoscope, a thin, flexible tube, is navigated through your colon.
19 services19 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.
13 services12 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.
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.

Mercy Medical Ctr

Acute Care Hospitals · Springfield, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220066
Location271 Carew StreetSpringfield, MA 01104 · Hampden County
Emergency services Birthing friendly

Baystate Medical Center

Acute Care Hospitals · Springfield, MA
1/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220077
Location759 Chestnut StreetSpringfield, MA 01199 · Hampden 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.

GAGANDEEP SINGH MD
Hospitalist
114 WOODLAND ST
HARTFORD, CT 06105
Capitol Planning Region (860) 714-7446
MRS. BROOKE M P CHAVES APRN
Nurse Practitioner (Family)
114 WOODLAND ST
HARTFORD, CT 06105
Capitol Planning Region (860) 714-4680
JOCELYN CALABRO APRN
Nurse Practitioner (Adult Health)
114 WOODLAND ST
HARTFORD, CT 06105
Capitol Planning Region (860) 714-4000
SAINT FRANCIS HOSPITAL AND MEDICAL CENTER
Clinic/Center (Dental)
114 WOODLAND ST
HARTFORD, CT 06105
Capitol Planning Region (860) 714-4995
PHILLIP DENNEN MD
Anesthesiology
114 WOODLAND ST
HARTFORD, CT 06105
Capitol Planning Region (860) 714-6654
FRANK J SETTER MD
Anesthesiology
114 WOODLAND ST
HARTFORD, CT 06105
Capitol Planning Region (860) 714-6654
TRINITY HEALTH OF NEW ENGLAND PROVIDER NETWORK ORGANIZATION INC
Internal Medicine
114 WOODLAND ST, SAINT FRANCIS MEDICAL GROUP INC.
HARTFORD, CT 06105
Capitol Planning Region (860) 714-1325
CATHERINE ANN CHAKAR-IYENGAR CRNA
Nurse Anesthetist, Certified Registered
114 WOODLAND ST, WOODLAND ANESTHESIOLOGY ASSOCIATES PC
HARTFORD, CT 06105
Capitol Planning Region (860) 614-6654

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 Spencer's NPI number?

The NPI number for Mark Spencer is 1508818097. It was assigned to this individual provider in the NPPES registry on May 16, 2006.

Where is Mark Spencer located?

Mark Spencer practices at 114 Woodland St, Hartford, CT 06105. The listed phone number is (860) 714-6654.

What is Mark Spencer's specialty?

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

Is Mark Spencer enrolled in Medicare?

Yes. Mark Spencer 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.

Is Mark Spencer affiliated with any hospitals?

According to CMS data, Mark Spencer is affiliated with Mercy Medical Ctr and Baystate Medical Center.

When was this NPI record last updated?

The NPPES record for Mark Spencer 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 22 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.