Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MACK SU
NPI 1023698271
Dermatology in Boston, MA

Active since April 12, 2021PECOS Enrolled
75 FRANCIS ST, BOSTON, MA 02115(617) 732-5775 Get Directions Write a Review

NPPES record last updated: June 30, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 21, 2026, Apr 12, 2021 (2 updates tracked since 2021).

About Mack Su NPPES

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

MACK SU (NPI 1023698271) is an individual dermatology provider in Boston, Massachusetts, licensed in Massachusetts (1022550) and active in the NPI registry since April 2021. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Other (2021).

NPPES Registry Identity

NPI1023698271
Entity TypeIndividualMale
Primary Taxonomy207N00000X
Provider Legal NameMACK SU
Location Address75 FRANCIS STBoston, MA 02115-6110
Mailing Address75 Francis StBoston, MA 02115-6110
Sole ProprietorNo
Medical School CMSOtherGraduated 2021
Enumeration DateApril 12, 2021
Last NPPES UpdateJune 30, 20262 updates tracked since enumeration
NPPES CertifiedJune 30, 2026
NPI 1023698271 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

Primary SpecialtyDermatologyAllopathic & Osteopathic Physicians
Taxonomy Code207N00000X
License Licensed in MA · 1022550
Definition
A dermatologist is trained to diagnose and treat pediatric and adult patients with benign and malignant disorders of the skin, mouth, external genitalia, hair and nails, as well as a number of sexually transmitted diseases. The dermatologist has had additional training and experience in the diagnosis and treatment of skin cancers, melanomas, moles and other tumors of the skin, the management of contact dermatitis and other allergic and nonallergic skin disorders, and in the recognition of the skin manifestations of systemic (including internal malignancy) and infectious diseases. Dermatologists have special training in dermatopathology and in the surgical techniques used in dermatology. They also have expertise in the management of cosmetic disorders of the skin such as hair loss and scars and the skin changes associated with aging.
Also ListedDermatology · DermatopathologyTaxonomy 207ND0900X · License 1022550 (MA)
75 FRANCIS ST, Boston, MA 02115

Secondary Practice Locations 2

Location 155 Fruit StBoston, MA 02114-2621 · Phone (617) 643-0800
Location 250 Staniford StBoston, MA 02114-2517 · Phone (617) 726-2914

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Mack Su is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8820498967
PECOS Enrollment IDI20260528003380
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 02115 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
$97.64 typical visit price
range $63.72 – $189.86
Typical copayment $24.41 (range $15.93 – $47.46)
Most-billed visit code 99203
Established Patient
$78.84 typical visit price
range $21.07 – $155.29
Typical copayment $19.71 (range $5.26 – $38.82)
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.

Internal Medicine (Gastroenterology)
75 FRANCIS ST
BOSTON, MA 02115
Neurological Surgery
75 FRANCIS ST
BOSTON, MA 02115
Student in an Organized Health Care Education/Training Program
75 FRANCIS ST
BOSTON, MA 02115
Radiology (Diagnostic Radiology)
75 FRANCIS ST, DEPARTMENT OF RADIOLOGY
BOSTON, MA 02115
Surgery (Vascular Surgery)
75 FRANCIS ST, BRIGHAM AND WOMEN'S HOSPITAL
BOSTON, MA 02115
Internal Medicine (Infectious Disease)
75 FRANCIS ST
BOSTON, MA 02115
Emergency Medicine
75 FRANCIS ST, BWH DEPT. OF EMERGENCY MEDICINE
BOSTON, MA 02115
Physician Assistant
75 FRANCIS ST
BOSTON, MA 02115

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 Mack Su's NPI number?

The NPI number for Mack Su is 1023698271. It was assigned to this individual provider in the NPPES registry on April 12, 2021.

Where is Mack Su located?

Mack Su practices at 75 Francis St, Boston, MA 02115. The listed phone number is (617) 732-5775.

What is Mack Su's specialty?

The primary specialty registered for this NPI is Dermatology with taxonomy code 207N00000X.

Is Mack Su enrolled in Medicare?

Yes. Mack Su is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mack Su was last updated on June 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 48 days 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.