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DR. ELIZABETH JOANNE HERSKOVITS CASTILLO MD PHD
NPI 1932176443
Internal Medicine - Geriatric Medicine in Boston, MA

Active since March 02, 2006PECOS EnrolledAccepts Medicare Assignment
98.06/100
CMS Quality Rating

NPPES record last updated: February 9, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jan 16, 2019, Mar 17, 2018, Jul 18, 2017 (3 updates tracked since 2017).

About Dr. Elizabeth Joanne Herskovits Castillo Md Phd NPPES

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

DR. ELIZABETH JOANNE HERSKOVITS CASTILLO MD PHD (NPI 1932176443) is an individual geriatric medicine provider in Boston, Massachusetts, licensed in Maine (MD22347) and active in the NPI registry since March 2006. She is enrolled in Medicare PECOS, is affiliated with Cape Cod Hospital, and is a graduate of University Of California, San Francisco School Of Medicine (2002).

NPPES Registry Identity

NPI1932176443
Entity TypeIndividualFemale
Primary Taxonomy207RG0300X
Provider Legal NameDR. ELIZABETH JOANNE HERSKOVITS CASTILLOCredential: MD PHD
Location Address55 FRUIT STBoston, MA 02114-2621
Mailing Address311 Service RdEast Sandwich, MA 02537-1370 · (508) 833-4000
Phone(617) 726-2000
Sole ProprietorNo
Medical School CMSUniversity Of California, San Francisco School Of MedicineGraduated 2002
Enumeration DateMarch 2, 2006
Last NPPES UpdateFebruary 9, 20263 updates tracked since enumeration
NPPES CertifiedFebruary 9, 2026
✔ NPI 1932176443 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Geriatric MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207RG0300X
Licenses✔ Licensed in ME · MD22347✔ Licensed in NC · 2006-01812
Definition
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.
Also ListedInternal MedicineTaxonomy 207R00000X · License 2006-01812 (NC)
Also ListedHospitalistTaxonomy 208M00000X · License 2006-01812 (NC)
55 FRUIT ST, Boston, MA 02114
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Other Names 1

Former Name (1)Elizabeth J. Herskovits Md

Other Identifiers 1

Medicaid1932176443ME

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. Elizabeth Joanne Herskovits Castillo 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 ID6709846033
PECOS Enrollment IDI20041012000932
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.

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.
345 services122 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.
223 services104 patients
Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or G2212
This service refers to extended doctor visits where your healthcare provider spends additional time evaluating and managing your health beyond the primary procedure's required time. This includes each extra 15 minutes spent by the physician on the same day as the primary service.
38 services27 patients
Advance care planning, first 30 minutes 99497
Advance care planning is a process where you discuss your healthcare preferences with your doctor. This conversation, lasting up to 30 minutes, helps ensure your wishes are respected if you're unable to communicate them in the future. It's about your care, your way.
22 services20 patients

Hospital Affiliations CMS Care Compare 2

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

Cape Cod Hospital

Acute Care Hospitals · Hyannis, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220012
Location27 Park StreetHyannis, MA 02601 · Barnstable 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.

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

98.06/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored through an Alternative Payment Model
Quality86.13
Promoting Interoperability100
Improvement Activities40

Referred Medical Equipment & Supplies CMS DME claims 4

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Filter, disposable, used with positive airway pressure device A7038
DME-Other DME · category DE001N
3 suppliers14 claims90 services$2.21 avg. paid by Medicare
Continuous positive airway pressure (cpap) device E0601
DME-Other DME · category DE001N
2 suppliers41 claims41 services$37.06 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
4 suppliers32 claims32 services$86.86 avg. paid by Medicare
Portable oxygen concentrator, rental E1392
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$32.53 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

STUTI GIRISH SHROFF MD, MBBS
Pathology (Anatomic Pathology)
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 726-2971
NANCY WANG M.D.
Internal Medicine (Hematology & Oncology)
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (017) 724-4000
DR. DUSAN HANIDZIAR M.D., PH.D.
Anesthesiology
55 FRUIT ST, GRAY-BIGELOW 444
BOSTON, MA 02114
Suffolk County (617) 726-3030
JOHN JOSEPH DANKO DO
Physical Medicine & Rehabilitation
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 726-2000
DR. MICHAEL ANDREW LOBRITZ M.D, PH.D.
Internal Medicine (Infectious Disease)
55 FRUIT ST, DIVISION OF INFECTIOUS DISEASE, GRJ-504
BOSTON, MA 02114
Suffolk County (617) 724-9248
MS. KELLY ELISHA TRECARTIN NP
Nurse Practitioner (Acute Care)
55 FRUIT ST, BIGALOW 852 F
BOSTON, MA 02114
Suffolk County (617) 726-7400
JAMIE MARIE ALLEN NP
Nurse Practitioner
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 724-4410
DR. DHAVAL SANJEEV KOLTE M.B.B.S., PH.D.
Internal Medicine (Cardiovascular Disease)
55 FRUIT ST
BOSTON, MA 02114
Suffolk County (617) 643-3238

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 Elizabeth Castillo's NPI number?

The NPI number for Elizabeth Castillo is 1932176443. It was assigned to this individual provider in the NPPES registry on March 2, 2006. The provider is also known as Elizabeth J. Herskovits MD.

Where is Elizabeth Castillo located?

Elizabeth Castillo practices at 55 Fruit St, Boston, MA 02114. The listed phone number is (617) 726-2000.

What is Elizabeth Castillo's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Geriatric Medicine, with taxonomy code 207RG0300X.

Is Elizabeth Castillo enrolled in Medicare?

Yes. Elizabeth Castillo 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 Elizabeth Castillo affiliated with any hospitals?

According to CMS data, Elizabeth Castillo is affiliated with Cape Cod Hospital and Brigham And Women's Hospital.

When was this NPI record last updated?

The NPPES record for Elizabeth Castillo was last updated on February 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.