MICHAEL GHIASSI DO
NPI 1255950440
Internal Medicine in Riverhead, NY

Q: What is Michael Ghiassi's NPI number?

The NPI number for Michael Ghiassi is 1255950440. It was assigned to this individual provider in the NPPES registry on April 8, 2020.

Q: What is Michael Ghiassi's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Michael Ghiassi was last updated on February 4, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.

Active since April 08, 2020PECOS EnrolledAccepts Medicare Assignment

1 HEROES WAY, RIVERHEAD, NY 11901(631) 548-6000 Get Directions Write a Review

NPPES record last updated: February 4, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Feb 4, 2025, Apr 8, 2020 (2 updates tracked since 2020).

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About Michael Ghiassi Do NPPES

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

MICHAEL GHIASSI DO (NPI 1255950440) is an individual internal medicine provider in Riverhead, New York, licensed in New York (322416) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS, is affiliated with Lansdale Hospital, and maintains a secondary practice location in Philadelphia.

NPPES Registry Identity

NPI1255950440

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameMICHAEL GHIASSICredential: DO

Location Address1 HEROES WAYRiverhead, NY 11901-2058

Mailing Address103 Stillwater CtHendersonville, TN 37075-4370 · (615) 975-3570

Phone(631) 548-6000

Sole ProprietorNo

Medical School CMSLincoln Memorial University Medical DepartmentGraduated 2019

Enumeration DateApril 8, 2020

Last NPPES UpdateFebruary 4, 20252 updates tracked since enumeration

NPPES CertifiedFebruary 4, 2025

✔ NPI 1255950440 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

Licenses✔ Licensed in NY · 322416✔ Licensed in PA · OS024395

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.

1 HEROES WAY, Riverhead, NY 11901

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Secondary Practice Location 1

Location 110800 Knights RdPhiladelphia, PA 19114-4200 · Phone (215) 481-3915

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

Michael Ghiassi 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 ID3173944279

PECOS Enrollment IDI20250305001407

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 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.

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.

628 services573 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.

21 services13 patients

Hospital Affiliations CMS Care Compare 2

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

Lansdale Hospital

Acute Care Hospitals · Lansdale, PA

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390012

Location100 Medical Campus DriveLansdale, PA 19446 · Montgomery County

Emergency services

Jefferson Health- Northeast

Acute Care Hospitals · Philadelphia, PA

1/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390115

Location10800 Knights RoadPhiladelphia, PA 19114 · Philadelphia County

Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 11901 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.

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. ORSEOLA ARAPI MD

Student in an Organized Health Care Education/Training Program