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MEGAN DESAI DO
NPI 1861955338
Psychiatry & Neurology - Psychiatry in Stony Brook, NY

Active since April 10, 2019PECOS EnrolledAccepts Medicare Assignment
101 NICOLLS RD RM 20, STONY BROOK, NY 11794(646) 444-3005(631) 444-7534 Get Directions Write a Review

NPPES record last updated: May 15, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 15, 2025, Apr 10, 2019 (2 updates tracked since 2019).

About Megan Desai Do NPPES

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

MEGAN DESAI DO (NPI 1861955338) is an individual psychiatry provider in Stony Brook, New York, licensed in New York (325042) and active in the NPI registry since April 2019. She is enrolled in Medicare PECOS and is a graduate of Other (2019).

NPPES Registry Identity

NPI1861955338
Entity TypeIndividualFemale
Primary Taxonomy2084P0800X
Provider Legal NameMEGAN DESAICredential: DO
Location Address101 NICOLLS RD RM 20Stony Brook, NY 11794-0001
Mailing Address101 Nicolls Rd Rm 20Stony Brook, NY 11794-8101 · (631) 444-3005 · Fax (631) 444-7534
Phone(646) 444-3005
Fax(631) 444-7534
Sole ProprietorNo
Medical School CMSOtherGraduated 2019
Enumeration DateApril 10, 2019
Last NPPES UpdateMay 15, 20252 updates tracked since enumeration
NPPES CertifiedMay 15, 2025
✔ NPI 1861955338 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPsychiatry & Neurology · PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0800X
License✔ Licensed in NY · 325042
Definition
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.
101 NICOLLS RD RM 20, Stony Brook, NY 11794
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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

Megan Desai Do 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 ID8628307626
PECOS Enrollment IDI20231212002881
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 Reassignments

2

Medicare enrollment records show Megan Desai reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

John T. Mather Memorial Hospital
3.8 mi
Neuromusculoskeletal Medicine & OMM
75 N COUNTRY RD
Port Jefferson, NY 11777
  • Reassigned Medicare billing, New York enrollment
  • Also billed through NPI 1467249334 (New York)
  • 232 clinicians in this Medicare group
NPI 1285920231 (631) 473-1320
North Shore-Lij Medical PC
32 mi
Urology
1010 NORTHERN BLVD STE 110
Great Neck, NY 11021
  • Reassigned Medicare billing, New York enrollment
  • 9,353 clinicians in this Medicare group
NPI 1053688572 (516) 321-7400

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 2

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.

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.
28 services19 patients
Psychiatric diagnostic evaluation with medical services 90792
A psychiatric diagnostic evaluation with medical services is a comprehensive assessment. It includes a detailed examination of your mental health and physical wellbeing, as well as your personal and family history. This evaluation aids in creating an effective treatment plan.
20 services18 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11794 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
$83.44 typical visit price
range $21.66 – $164.45
Typical copayment $20.86 (range $5.41 – $41.11)
Most-billed visit code 99213
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.

JULIA XAVIER MD
Student in an Organized Health Care Education/Training Program
101 NICOLLS RD RM 20
STONY BROOK, NY 11794
Suffolk County (631) 469-1362
TIFFANI-AMBER MILLER
Obstetrics & Gynecology (Gynecology)
101 NICOLLS RD RM 20
STONY BROOK, NY 11794
Suffolk County (631) 689-8333
CECILIA NORTH MASTROGIACOMO
Student in an Organized Health Care Education/Training Program
101 NICOLLS RD RM 20
STONY BROOK, NY 11794
Suffolk County (631) 444-2739
TAE MIN LEE
Student in an Organized Health Care Education/Training Program
101 NICOLLS RD RM 20
STONY BROOK, NY 11794
Suffolk County (631) 444-7411
JANEY JAMES
Internal Medicine
101 NICOLLS RD RM 20
STONY BROOK, NY 11794
Suffolk County (631) 444-7411
LESLIE ANNE CAPARAS UMALI PA
Physician Assistant
101 NICOLLS RD RM 20
STONY BROOK, NY 11794
Suffolk County (631) 444-2034
DR. GIAYNEL PAULETTE DONATELLI MD
Student in an Organized Health Care Education/Training Program
101 NICOLLS RD RM 20
STONY BROOK, NY 11794
Suffolk County (631) 444-2990
DR. ANGELINA STEWART MOZIER MD
Student in an Organized Health Care Education/Training Program
101 NICOLLS RD RM 20
STONY BROOK, NY 11794
Suffolk County (631) 444-2739

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 Megan Desai's NPI number?

The NPI number for Megan Desai is 1861955338. It was assigned to this individual provider in the NPPES registry on April 10, 2019.

Where is Megan Desai located?

Megan Desai practices at 101 Nicolls Rd Rm 20, Stony Brook, NY 11794. The listed phone number is (646) 444-3005.

What is Megan Desai's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.

Is Megan Desai enrolled in Medicare?

Yes. Megan Desai 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 organizations bill Medicare for Megan Desai's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Megan Desai reassigns Medicare benefits to 2 organizations: John T. Mather Memorial Hospital (Port Jefferson, NY) and North Shore-Lij Medical PC (Great Neck, NY). Each 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 Megan Desai's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Megan Desai was last updated on May 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 17 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.