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KAREN PATRICIA SEITER M.D.
NPI 1265494124
Internal Medicine - Hematology & Oncology in Hawthorne, NY

Active since April 05, 2006PECOS EnrolledAccepts Medicare Assignment
19 BRADHURST AVE, SUITE 2100, HAWTHORNE, NY 10532(914) 493-8375(914) 347-1832 Get Directions Write a Review

NPPES record last updated: October 10, 2025. Verified against the NPPES registry weekly; last sync: August 23, 2026.

Record update history: Oct 10, 2025, Jul 16, 2019 (2 updates tracked since 2019).

About Karen Patricia Seiter M.d. NPPES

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

KAREN PATRICIA SEITER M.D. (NPI 1265494124) is an individual hematology & oncology provider in Hawthorne, New York, licensed in Connecticut (83187) and active in the NPI registry since April 2006. She is enrolled in Medicare PECOS, is affiliated with Westchester Medical Center, and is a graduate of New York Medical College (1985).

NPPES Registry Identity

NPI1265494124
Entity TypeIndividualFemale
Primary Taxonomy207RH0003X
Provider Legal NameKAREN PATRICIA SEITERCredential: M.D.
Location Address19 BRADHURST AVE, SUITE 2100Hawthorne, NY 10532-2140
Mailing Address95 Locust AveDanbury, CT 06810-6148 · (203) 739-7029
Phone(914) 493-8375
Fax(914) 347-1832
Sole ProprietorNo
Medical School CMSNew York Medical CollegeGraduated 1985
Enumeration DateApril 5, 2006
Last NPPES UpdateOctober 10, 20252 updates tracked since enumeration
NPPES CertifiedOctober 10, 2025
✔ NPI 1265494124 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in CT · 83187
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedInternal Medicine · HematologyTaxonomy 207RH0000X · License 83187 (CT)
Also ListedInternal Medicine · Medical OncologyTaxonomy 207RX0202X · License 83187 (CT)
19 BRADHURST AVE, Hawthorne, NY 10532
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Other Identifiers 1

Medicaid01269112NY

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 Patricia Seiter 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 ID9830180025
PECOS Enrollment IDI20251223000097
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 10

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.
584 services125 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes 99233
Follow-up hospital inpatient care per day typically involves a 35-minute check-up by your healthcare provider. This service includes monitoring your health progress, adjusting your treatment plan if needed, and answering any questions you may have about your condition or care.
346 services65 patients
Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes 99232
Follow-up hospital inpatient care involves daily check-ups while you're admitted in the hospital. Typically, a healthcare provider spends about 25 minutes each day reviewing your condition, adjusting treatment if needed, and answering any questions you might have.
299 services64 patients
Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional 99211
This service involves an outpatient visit for established patients who may not need direct interaction with a healthcare professional. It could include reviewing test results, monitoring existing conditions, or adjusting treatment plans. It's typically done remotely, ensuring your comfort and convenience.
61 services23 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.
37 services29 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.
30 services30 patients

Hospital Affiliations CMS Care Compare

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

Westchester Medical Center

Acute Care Hospitals · Valhalla, NY
1/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number330234
Location100 Woods RdValhalla, NY 10595 · Westchester County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10532 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
$203.53 typical visit price
range $67.40 – $203.53
Typical copayment $50.88 (range $16.85 – $50.88)
Most-billed visit code 99205
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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.

CORDELIA V SHARMA MD
Internal Medicine (Critical Care Medicine)
19 BRADHURST AVE, SUITE 3040N
HAWTHORNE, NY 10532
Westchester County (914) 493-6820
DR. AMY MICHELLE WASSERMAN M.D.
Internal Medicine (Rheumatology)
19 BRADHURST AVE, SUITE 3070N
HAWTHORNE, NY 10532
Westchester County (914) 372-7887
GIFTY ADJEI-DUGBATEY FNP
Nurse Practitioner (Primary Care)
19 BRADHURST AVE
HAWTHORNE, NY 10532
Westchester County (347) 369-8719
KARIM BAKASH SOLANGI MD
Internal Medicine (Nephrology)
19 BRADHURST AVE, SUITE 200N
HAWTHORNE, NY 10532
Westchester County (914) 493-7701
CARMELO ANTHONY PUCCIO M.D.
Internal Medicine (Medical Oncology)
19 BRADHURST AVE, SUITE 2100
HAWTHORNE, NY 10532
Westchester County (914) 493-8375
DR. JOSEPH VOZZOLO M.D.
Internal Medicine (Cardiovascular Disease)
19 BRADHURST AVE, SUITE 700
HAWTHORNE, NY 10532
Westchester County (914) 337-3500
JOSE L MUNOZ MD
Pediatrics (Pediatric Infectious Diseases)
19 BRADHURST AVE, STE. 1400
HAWTHORNE, NY 10532
Westchester County (914) 493-8333
DR. SEI IWAI MD
Internal Medicine (Clinical Cardiac Electrophysiology)
19 BRADHURST AVE, SUITE 3850S
HAWTHORNE, NY 10532
Westchester County (914) 909-6900

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 Seiter's NPI number?

The NPI number for Karen Seiter is 1265494124. It was assigned to this individual provider in the NPPES registry on April 5, 2006.

Where is Karen Seiter located?

Karen Seiter practices at 19 Bradhurst Ave Suite 2100, Hawthorne, NY 10532. The listed phone number is (914) 493-8375.

What is Karen Seiter's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is Karen Seiter enrolled in Medicare?

Yes. Karen Seiter 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 Karen Seiter affiliated with any hospitals?

According to CMS data, Karen Seiter is affiliated with Westchester Medical Center.

When was this NPI record last updated?

The NPPES record for Karen Seiter was last updated on October 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.