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HANNAH DE GROOT M.D.
NPI 1093133357
Internal Medicine in White Plains, NY

Active since April 03, 2014PECOS EnrolledAccepts Medicare Assignment
210 WESTCHESTER AVE, WHITE PLAINS, NY 10604(914) 682-6532(914) 681-5260 Get Directions Write a Review

NPPES record last updated: July 26, 2018. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Hannah De Groot M.d. NPPES

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

HANNAH DE GROOT M.D. (NPI 1093133357) is an individual internal medicine provider in White Plains, New York, licensed in New York (288667) and active in the NPI registry since April 2014. She is enrolled in Medicare PECOS, is affiliated with White Plains Hospital Center, and maintains a secondary practice location in Rochester.

NPPES Registry Identity

NPI1093133357
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameHANNAH DE GROOTCredential: M.D.
Location Address210 WESTCHESTER AVEWhite Plains, NY 10604
Mailing Address601 Elmwood Ave, Box MedRochester, NY 14642-0001
Phone(914) 682-6532
Fax(914) 681-5260
Sole ProprietorNo
Medical School CMSUniversity Of Maryland School Of MedicineGraduated 2014
Enumeration DateApril 3, 2014
Last NPPES UpdateJuly 26, 2018
✔ NPI 1093133357 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in NY · 288667
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedHospitalistTaxonomy 208M00000X · License 288667 (NY)
210 WESTCHESTER AVE, White Plains, NY 10604
Open in Google Maps ↗

Secondary Practice Location 1

Location 1601 Elmwood Ave, Box MEDRochester, NY 14642-0001 · Phone (585) 275-2222

Other Identifiers 1

Medicaid04861670NY

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

Hannah De Groot 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 ID8325311483
PECOS Enrollment IDI20170912001591
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 Hannah De Groot reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Westchester Medical Group, P.C.
3.2 mi
Critical Care Medicine
800 WESTCHESTER AVE STE N715
Rye Brook, NY 10573
  • Reassigned Medicare billing, New York enrollment
  • 470 clinicians in this Medicare group
NPI 1881653822 (908) 988-0428

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 6

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.

Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes 99222
Initial hospital inpatient care is a service where a healthcare provider spends about 50 minutes per day overseeing your care while you're admitted in the hospital. This includes reviewing your health status, planning your treatment, and ensuring your safety and comfort.
151 services139 patients
Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes 99223
Initial hospital inpatient care per day, typically 70 minutes, refers to the daily medical service provided to patients admitted to the hospital. This includes a comprehensive evaluation, diagnosis, treatment plan, and monitoring of your health condition. It ensures your well-being during your hospital stay.
97 services90 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.
60 services42 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.
50 services29 patients
Hospital discharge day management, more than 30 minutes 99239
Hospital discharge day management over 30 minutes involves a detailed process to ensure a smooth transition from hospital to home. It includes final examinations, discussion of your hospital stay, post-discharge instructions, and coordinating follow-up care.
17 services17 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.
15 services15 patients

Hospital Affiliations CMS Care Compare

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

White Plains Hospital Center

Acute Care Hospitals · White Plains, NY
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330304
Location41 East Post R0adWhite Plains, NY 10601 · Westchester County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10604 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
$154.28 typical visit price
range $67.40 – $203.53
Typical copayment $38.57 (range $16.85 – $50.88)
Most-billed visit code 99204
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.

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.

Home ventilator, any type, used with non-invasive interface, (e.g., mask, chest shell) E0466
DME-Other DME · category DE005N
1 supplier24 claims24 services$907.03 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.

DR. LAURENCE SEKANSKY
Anesthesiology
210 WESTCHESTER AVE
WHITE PLAINS, NY 10604
Westchester County (914) 682-6466
ALEXA RYANN LEIB
Obstetrics & Gynecology
210 WESTCHESTER AVE
WEST HARRISON, NY 10604
Westchester County (914) 682-0700
DR. PETER K STEVENS D.O.
Family Medicine
210 WESTCHESTER AVE
WHITE PLAINS, NY 10604
Westchester County (914) 681-3100
MR. RONALD M ALOIS PA-C
Physician Assistant (Surgical)
210 WESTCHESTER AVE
WHITE PLAINS, NY 10604
Westchester County (914) 682-6532
DR. AURORA LEIBOLD M.D.
Obstetrics & Gynecology
210 WESTCHESTER AVE
WHITE PLAINS, NY 10604
Westchester County (914) 682-0732
DR. YOUNG DON OH MD
Orthopaedic Surgery
210 WESTCHESTER AVE
WHITE PLAINS, NY 10604
Westchester County (914) 682-6540
DR. AVI M DEENER MD
Allergy & Immunology
210 WESTCHESTER AVE
WHITE PLAINS, NY 10604
Westchester County (914) 831-6850
DR. MANUEL RODRIGO ESTEBAN-GALINDO M.D.
Family Medicine
210 WESTCHESTER AVE
WHITE PLAINS, NY 10604
Westchester County (914) 681-3100

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 Hannah De Groot's NPI number?

The NPI number for Hannah De Groot is 1093133357. It was assigned to this individual provider in the NPPES registry on April 3, 2014.

Where is Hannah De Groot located?

Hannah De Groot practices at 210 Westchester Ave, White Plains, NY 10604. The listed phone number is (914) 682-6532.

What is Hannah De Groot's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Hannah De Groot enrolled in Medicare?

Yes. Hannah De Groot 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 Hannah De Groot's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Hannah De Groot reassigns Medicare benefits to Westchester Medical Group, P.C. (Rye Brook, NY). 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 Hannah De Groot's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Hannah De Groot affiliated with any hospitals?

According to CMS data, Hannah De Groot is affiliated with White Plains Hospital Center.

When was this NPI record last updated?

The NPPES record for Hannah De Groot was last updated on July 26, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.