KAREN MARCELA ST. JEAN MD
NPI 1083173124
Internal Medicine - Endocrinology, Diabetes & Metabolism in Burlington, MA

Active since March 18, 2019PECOS EnrolledAccepts Medicare Assignment
41 MALL RD, BURLINGTON, MA 01805(781) 744-8000 Get Directions Write a Review

NPPES record last updated: July 9, 2024. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Jul 9, 2024, Jun 6, 2024, Mar 18, 2019 (3 updates tracked since 2019).

About Karen Marcela St. Jean Md NPPES

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

KAREN MARCELA ST. JEAN MD (NPI 1083173124) is an individual endocrinology, diabetes & metabolism provider in Burlington, Massachusetts, licensed in Massachusetts (1020264) and active in the NPI registry since March 2019. She is enrolled in Medicare PECOS, is affiliated with Anna Jaques Hospital, and maintains a secondary practice location in Burlington.

NPPES Registry Identity

NPI1083173124
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameKAREN MARCELA ST. JEANCredential: MD
Location Address41 MALL RDBurlington, MA 01805-5108
Mailing AddressProvider Enrollment 41 Mall RoadBurlington, MA 01805-0001
Sole ProprietorYes
Medical School CMSOtherGraduated 2012
Enumeration DateMarch 18, 2019
Last NPPES UpdateJuly 9, 20243 updates tracked since enumeration
NPPES CertifiedJuly 9, 2024
NPI 1083173124 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License Licensed in MA · 1020264
Definition
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.
41 MALL RD, Burlington, MA 01805

Other Names 1

Former Name (1)Karen Marcela Cajiao

Secondary Practice Location 1

Location 167 S Bedford StBurlington, MA 01803-5108 · Phone (781) 744-2088 · Fax (617) 303-8144

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

Karen Marcela St. Jean 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 ID8921349564
PECOS Enrollment IDI20240718001160
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 2

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.
84 services82 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
51 services51 patients

Hospital Affiliations CMS Care Compare 5

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

Anna Jaques Hospital

Acute Care Hospitals · Newburyport, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220029
Location25 Highland AvenueNewburyport, MA 01950 · Essex County
Emergency services Birthing friendly

Northeast Hospital Corporation

Acute Care Hospitals · Beverly, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220033
Location85 Herrick StreetBeverly, MA 01915 · Essex County
Emergency services Birthing friendly

Beth Israel Deaconess Medical Center

Acute Care Hospitals · Boston, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220086
Location330 Brookline AvenueBoston, MA 02215 · Suffolk County
Emergency services Birthing friendly

Winchester Hospital

Acute Care Hospitals · Winchester, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220105
Location41 Highland AvenueWinchester, MA 01890 · Middlesex County
Emergency services Birthing friendly

Lahey Hospital & Medical Center, Burlington

Acute Care Hospitals · Burlington, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220171
Location41 & 45 Mall RoadBurlington, MA 01803 · Middlesex County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01805 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
$144.11 typical visit price
range $63.72 – $189.86
Typical copayment $36.02 (range $15.93 – $47.46)
Most-billed visit code 99204
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.

Internal Medicine (Interventional Cardiology)
41 MALL RD
BURLINGTON, MA 01805
Hospitalist
41 MALL RD
BURLINGTON, MA 01805
Registered Nurse
41 MALL RD
BURLINGTON, MA 01805
Nurse Practitioner
41 MALL RD
BURLINGTON, MA 01805
Pharmacist
41 MALL RD
BURLINGTON, MA 01805
Student in an Organized Health Care Education/Training Program
41 MALL RD
BURLINGTON, MA 01805
Physician Assistant
41 MALL RD
BURLINGTON, MA 01805
Nurse Practitioner
41 MALL RD
BURLINGTON, MA 01805

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 Karen St. Jean's NPI number?

The NPI number for Karen St. Jean is 1083173124. It was assigned to this individual provider in the NPPES registry on March 18, 2019. The provider is also known as Karen Marcela Cajiao.

Where is Karen St. Jean located?

Karen St. Jean practices at 41 Mall Rd, Burlington, MA 01805. The listed phone number is (781) 744-8000.

What is Karen St. Jean's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Endocrinology, Diabetes & Metabolism, with taxonomy code 207RE0101X.

Is Karen St. Jean enrolled in Medicare?

Yes. Karen St. Jean 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 Karen St. Jean accept?

Health plans from Anthem Blue Cross and Blue Sheld and Anthem Blue Cross and Blue Shield list Karen St. Jean 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 Karen St. Jean affiliated with any hospitals?

According to CMS data, Karen St. Jean is affiliated with Anna Jaques Hospital, Northeast Hospital Corporation, Beth Israel Deaconess Medical Center, Winchester Hospital and Lahey Hospital & Medical Center, Burlington.

When was this NPI record last updated?

The NPPES record for Karen St. Jean was last updated on July 9, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.