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DR. JOY NATALIE TSAI MD
NPI 1710134929
Internal Medicine - Endocrinology, Diabetes & Metabolism in Boston, MA

Active since August 19, 2008PECOS EnrolledAccepts Medicare Assignment
55 FRUIT ST., ENDOCRINE TRAINING PROGRAM, BOSTON, MA 02114(617) 724-7777(617) 726-7543 Get Directions Write a Review

NPPES record last updated: March 19, 2014. Verified against the NPPES registry weekly; last sync: August 09, 2026.

About Dr. Joy Natalie Tsai Md NPPES

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

DR. JOY NATALIE TSAI MD (NPI 1710134929) is an individual endocrinology, diabetes & metabolism provider in Boston, Massachusetts, licensed in Massachusetts (258303) and active in the NPI registry since August 2008. She is enrolled in Medicare PECOS, is affiliated with North Shore Medical Center -, and is a graduate of Northwestern University Feinberg Medical School (2007).

NPPES Registry Identity

NPI1710134929
Entity TypeIndividualFemale
Primary Taxonomy207RE0101X
Provider Legal NameDR. JOY NATALIE TSAICredential: MD
Location Address55 FRUIT ST., ENDOCRINE TRAINING PROGRAMBoston, MA 02114
Mailing Address55 Fruit St., Endocrine Training ProgramBoston, MA 02114 · (617) 724-7777 · Fax (617) 726-7543
Phone(617) 724-7777
Fax(617) 726-7543
Sole ProprietorNo
Medical School CMSNorthwestern University Feinberg Medical SchoolGraduated 2007
Enumeration DateAugust 19, 2008
Last NPPES UpdateMarch 19, 2014
✔ NPI 1710134929 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Endocrinology, Diabetes & MetabolismAllopathic & Osteopathic Physicians
Taxonomy Code207RE0101X
License✔ Licensed in MA · 258303
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.
Also ListedInternal MedicineTaxonomy 207R00000X · License 125052821 (IL), 258303 (MA)
55 FRUIT ST., Boston, MA 02114
Open in Google Maps ↗

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

Dr. Joy Natalie Tsai 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 ID6406041599
PECOS Enrollment IDI20140620000032
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 5

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.

Dxa bone density measurement of hip, pelvis, spine 77080
A DXA bone density measurement is a simple, quick, and non-invasive procedure that assesses the strength of your bones. This test uses X-rays to measure the amount of minerals, mainly calcium, in the hip, pelvis, and spine. It helps in early detection of osteoporosis or other bone diseases.
718 services716 patients
Dxa bone density measurement of forearm, finger, hand, or foot 77081
A DXA bone density measurement of the forearm, finger, hand, or foot is a non-invasive procedure that uses X-rays to measure the amount of calcium and other minerals in your bones. This test helps to assess the strength of your bones and your risk of fractures.
105 services105 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.
98 services96 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.
23 services22 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.
15 services15 patients

Hospital Affiliations CMS Care Compare 5

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

North Shore Medical Center -

Acute Care Hospitals · Salem, MA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220035
Location81 Highland AvenueSalem, MA 01970 · Essex County
Emergency services Birthing friendly

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

Martha's Vineyard Hospital Inc

Critical Access Hospitals · Oak Bluffs, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number221300
LocationOne Hospital Road, First Fl, Wing 5, PO Box 1477Oak Bluffs, MA 02557 · Dukes 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
$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.

QIAN YANG DMD
Oral & Maxillofacial Surgery
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 726-8222
SANJAY MENON MD
Psychiatry & Neurology (Neurology)
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (857) 238-5600
NOAH DANIEL HURST LEWIS MD
Student in an Organized Health Care Education/Training Program
55 FRUIT ST., YAWHAY OUTPATIENT CENTER -5B
BOSTON, MA 02114
Suffolk County (617) 643-7117
GANESH M SHANKAR MD, PHD
Neurological Surgery
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 726-5143
JAMIE M JACOBS PHD
Psychologist (Clinical)
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 724-5600
HIDEO MAKIMURA M.D., PH.D.
Internal Medicine
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 726-7948
DAVID T MADURAM MD, PHD
Anesthesiology
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 726-3030
OPEYEMI A OLABISI MD, PHD
Internal Medicine
55 FRUIT ST., MASSACHUSETTS GENERAL HOSPITAL
BOSTON, MA 02114
Suffolk County (617) 726-2862

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 Joy Tsai's NPI number?

The NPI number for Joy Tsai is 1710134929. It was assigned to this individual provider in the NPPES registry on August 19, 2008.

Where is Joy Tsai located?

Joy Tsai practices at 55 Fruit St. Endocrine Training Program, Boston, MA 02114. The listed phone number is (617) 724-7777.

What is Joy Tsai's specialty?

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

Is Joy Tsai enrolled in Medicare?

Yes. Joy Tsai 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 Joy Tsai affiliated with any hospitals?

According to CMS data, Joy Tsai is affiliated with North Shore Medical Center -, Massachusetts General Hospital, Newton-Wellesley Hospital, Brigham And Women's Hospital and Martha's Vineyard Hospital Inc.

When was this NPI record last updated?

The NPPES record for Joy Tsai was last updated on March 19, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.