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DR. KASTOORI IYENGAR M.D.
NPI 1861450603
Family Medicine in Harvard, MA

Active since May 02, 2006PECOS EnrolledAccepts Medicare Assignment
198 AYER RD, HARVARD, MA 01451(978) 456-2355(978) 456-2356 Get Directions Write a Review

NPPES record last updated: April 25, 2022. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Apr 25, 2022, Dec 16, 2020, Nov 25, 2019 and 1 more (4 updates tracked since 2019).

About Dr. Kastoori Iyengar M.d. NPPES

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

DR. KASTOORI IYENGAR M.D. (NPI 1861450603) is an individual family medicine provider in Harvard, Massachusetts, licensed in Massachusetts (226683) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS, is affiliated with Umass Memorial Healthalliance Hospitals, and is a graduate of Other (1992).

NPPES Registry Identity

NPI1861450603
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameDR. KASTOORI IYENGARCredential: M.D.
Location Address198 AYER RDHarvard, MA 01451-1163
Mailing AddressPo Box 415348Boston, MA 02241-5348 · (800) 225-8885 · Fax (508) 334-1977
Phone(978) 456-2355
Fax(978) 456-2356
Sole ProprietorNo
Medical School CMSOtherGraduated 1992
Enumeration DateMay 2, 2006
Last NPPES UpdateApril 25, 20224 updates tracked since enumeration
NPPES CertifiedApril 25, 2022
✔ NPI 1861450603 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License✔ Licensed in MA · 226683
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
198 AYER RD, Harvard, MA 01451
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Taro Health.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Kastoori Iyengar 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 ID6103823778
PECOS Enrollment IDI20061025000312
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.

Medicare Billing Reassignment

Medicare enrollment records show Kastoori Iyengar reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Umass Memorial Medical Group Inc
20 mi
Internal Medicine
55 LAKE AVE N
Worcester, MA 01655
  • Reassigned Medicare billing, Massachusetts enrollment
  • 2,902 clinicians in this Medicare group
NPI 1760445373 (508) 334-1000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

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.
99 services59 patients
Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit G0439
An annual wellness visit is a yearly appointment with your primary care provider to create or update a personalized prevention plan. This plan helps prevent illness based on your current health and risk factors. It's a subsequent visit, meaning it follows an initial assessment.
49 services49 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
42 services33 patients
Administration of influenza virus vaccine G0008
The administration of the influenza virus vaccine, also known as the flu shot, is a simple procedure to protect against the flu. A healthcare provider injects a small dose of the vaccine into your arm. This stimulates your immune system to produce antibodies, which will help your body fight off the flu if exposed.
17 services17 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.
13 services11 patients

Hospital Affiliations CMS Care Compare 3

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

Umass Memorial Healthalliance Hospitals

Acute Care Hospitals · Leominster, MA
2/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number220001
Location60 Hospital RoadLeominster, MA 01453 · Worcester County
Emergency services

Umass Memorial Healthcare-Marlborough Hospital

Acute Care Hospitals · Marlborough, MA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220049
Location157 Union StreetMarlborough, MA 01752 · Middlesex County
Emergency services

Umass Memorial Medical Center/University Campus

Acute Care Hospitals · Worcester, MA
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number220163
Location55 Lake Avenue NorthWorcester, MA 01655 · Worcester County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 01451 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
$90.70 typical visit price
range $58.86 – $177.36
Typical copayment $22.67 (range $14.71 – $44.34)
Most-billed visit code 99203
Established Patient
$103.48 typical visit price
range $19.11 – $144.84
Typical copayment $25.87 (range $4.77 – $36.21)
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.

Referred Medical Equipment & Supplies CMS DME claims

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

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
3 suppliers18 claims38 services$5.02 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 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

AIMEE C. KOBJACK MD
Family Medicine
198 AYER RD
HARVARD, MA 01451
Worcester County (978) 456-2355
MS. SARAH ANN MORASSE FNP
Nurse Practitioner
198 AYER RD
HARVARD, MA 01451
Worcester County (978) 456-2355
DR. MARIANNE MONET WILLEY TROTTER MD
Family Medicine
198 AYER RD
HARVARD, MA 01451
Worcester County (978) 456-2355
WILLIAM BROWN
Family Medicine
198 AYER RD
HARVARD, MA 01451
Worcester County (784) 562-3559

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 Kastoori Iyengar's NPI number?

The NPI number for Kastoori Iyengar is 1861450603. It was assigned to this individual provider in the NPPES registry on May 2, 2006.

Where is Kastoori Iyengar located?

Kastoori Iyengar practices at 198 Ayer Rd, Harvard, MA 01451. The listed phone number is (978) 456-2355.

What is Kastoori Iyengar's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Kastoori Iyengar enrolled in Medicare?

Yes. Kastoori Iyengar 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.

Which organization bills Medicare for Kastoori Iyengar's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kastoori Iyengar reassigns Medicare benefits to Umass Memorial Medical Group Inc (Worcester, MA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Kastoori Iyengar's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kastoori Iyengar accept?

Health plans from Anthem Blue Cross and Blue Shield and Taro Health list Kastoori Iyengar 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 Kastoori Iyengar affiliated with any hospitals?

According to CMS data, Kastoori Iyengar is affiliated with Umass Memorial Healthalliance Hospitals, Umass Memorial Healthcare-Marlborough Hospital and Umass Memorial Medical Center/University Campus.

When was this NPI record last updated?

The NPPES record for Kastoori Iyengar was last updated on April 25, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.