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DR. IAN ALEXANDER MELLIS MD, PHD
NPI 1366022915
Pathology - Clinical Pathology in New York, NY

Active since April 08, 2021PECOS EnrolledAccepts Medicare Assignment
622 W 168TH ST, NEW YORK, NY 10032(212) 305-5697 Get Directions Write a Review

NPPES record last updated: October 24, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 9, 2025, Aug 7, 2025, Apr 8, 2021 (3 updates tracked since 2021).

About Dr. Ian Alexander Mellis Md, Phd NPPES

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

DR. IAN ALEXANDER MELLIS MD, PHD (NPI 1366022915) is an individual clinical pathology provider in New York, New York, licensed in New York (327229) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS, is affiliated with New York-presbyterian Hospital, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1366022915
Entity TypeIndividualMale
Primary Taxonomy207ZC0006X
Provider Legal NameDR. IAN ALEXANDER MELLISCredential: MD, PHD
Location Address622 W 168TH STNew York, NY 10032-3720
Mailing Address630 West 168th St, Ph 1564wNew York, NY 10032
Phone(212) 305-5697
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateApril 8, 2021
Last NPPES UpdateOctober 24, 20253 updates tracked since enumeration
NPPES CertifiedOctober 24, 2025
✔ NPI 1366022915 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 4

★ Primary SpecialtyPathology · Clinical PathologyAllopathic & Osteopathic Physicians
Taxonomy Code207ZC0006X
License✔ Licensed in NY · 327229
Definition
A pathologist deals with the causes and nature of disease and contributes to diagnosis, prognosis and treatment through knowledge gained by the laboratory application of the biologic, chemical and physical sciences. A pathologist uses information gathered from the microscopic examination of tissue specimens, cells and body fluids, and from clinical laboratory tests on body fluids and secretions for the diagnosis, exclusion and monitoring of disease.
Also ListedPathology · Blood Banking & Transfusion MedicineTaxonomy 207ZB0001X · License 327229 (NY)
Also ListedPathology · Chemical PathologyTaxonomy 207ZP0104X · License 327229 (NY)
Also ListedPathology · Clinical Pathology/Laboratory MedicineTaxonomy 207ZP0105X · License 327229 (NY)
622 W 168TH ST, New York, NY 10032
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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

Dr. Ian Alexander Mellis Md, Phd 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 ID4981115573
PECOS Enrollment IDI20250619002244
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 Ian Mellis reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Trustees Of Columbia University In The City Of New York
Same address
Surgery
622 W 168TH ST
New York, NY 10032
  • Reassigned Medicare billing, New York enrollment
  • 3,922 clinicians in this Medicare group
NPI 1508266347 (646) 317-7111

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

Hospital Affiliations CMS Care Compare

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

New York-Presbyterian Hospital

Acute Care Hospitals · New York, NY
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number330101
Location525 East 68th StreetNew York, NY 10065 · New York County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 10032 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
$150.24 typical visit price
range $65.69 – $198.19
Typical copayment $37.56 (range $16.42 – $49.54)
Most-billed visit code 99204
Established Patient
$114.88 typical visit price
range $21.20 – $160.66
Typical copayment $28.72 (range $5.30 – $40.16)
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. PIETRO ALESSANDRO AMBROGIO CANETTA M.D.
Internal Medicine (Nephrology)
622 W 168TH ST, PH4-124
NEW YORK, NY 10032
New York County (212) 305-5020
CHARLES D RESOR
Internal Medicine
622 W 168TH ST
NEW YORK, NY 10032
New York County (212) 305-2913
MR. CALVIN KAILUN LEE NP
Nurse Practitioner (Adult Health)
622 W 168TH ST
NEW YORK, NY 10032
New York County (212) 305-0914
DI FAN CONEYBEARE M.D.
Emergency Medicine
622 W 168TH ST
NEW YORK, NY 10032
New York County (760) 808-2557
JONATHAN LE PHARM.D.
Pharmacist
622 W 168TH ST
NEW YORK, NY 10032
New York County (212) 342-8645
ASHLEE A CAMPBELL
Student in an Organized Health Care Education/Training Program
622 W 168TH ST
NEW YORK, NY 10032
New York County (212) 305-6100
DR. EMILY SPIERA MD, MPH
Student in an Organized Health Care Education/Training Program
622 W 168TH ST
NEW YORK, NY 10032
New York County (212) 305-6262
SAAGAR MADHAV PANDE
Student in an Organized Health Care Education/Training Program
622 W 168TH ST
NEW YORK, NY 10032
New York County (212) 305-6100

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 Ian Mellis's NPI number?

The NPI number for Ian Mellis is 1366022915. It was assigned to this individual provider in the NPPES registry on April 8, 2021.

Where is Ian Mellis located?

Ian Mellis practices at 622 W 168th St, New York, NY 10032. The listed phone number is (212) 305-5697.

What is Ian Mellis's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Clinical Pathology, with taxonomy code 207ZC0006X.

Is Ian Mellis enrolled in Medicare?

Yes. Ian Mellis 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 Ian Mellis's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Ian Mellis reassigns Medicare benefits to Trustees Of Columbia University In The City Of New York (New York, 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 Ian Mellis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Ian Mellis affiliated with any hospitals?

According to CMS data, Ian Mellis is affiliated with New York-Presbyterian Hospital.

When was this NPI record last updated?

The NPPES record for Ian Mellis was last updated on October 24, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.