What is Amy Liang's NPI number?

Amy Liang's National Provider Identifier (NPI) is 1346684073, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Amy Liang's specialty?

Amy Liang is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).

Where is Amy Liang located?

Amy Liang's practice location on file with NPPES is 20 York St, New Haven, CT 06510.

What is Amy Liang's phone number?

The practice phone number listed in the NPPES registry for Amy Liang is (203) 688-4242.

Does Amy Liang accept Medicare?

Amy Liang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.

Is Amy Liang's NPI active?

Yes — Amy Liang's NPI (1346684073) is active in the NPPES registry as of the last update on 2018-05-30.

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Amy Liang, M.D.

NPI 1346684073 · Surgery Physician · New Haven, CT

Amy Liang, M.D. is a Surgery Physician provider in New Haven, CT (NPI 1346684073).

Provider details

NPI number: 1346684073
Entity type: Individual
Primary specialty: Surgery PhysicianAllopathic & Osteopathic Physicians
Credential: M.D.
Sex: Female
Sole proprietor: No

Practice location

20 York St

New Haven, CT 06510

Phone: (203) 688-4242

Street-level locationGet directions

More CT providers

Mailing address

20 York St

New Haven, CT 06510-3220

Specialties & taxonomies

Surgery PhysicianPrimary208600000XLicense 57237 (CT)
Allopathic & Osteopathic Physicians
Student in an Organized Health Care Education/Training Program390200000X
Student, Health Care

Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)

Profile Score

Established profile(56/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure28% of score
13 yrs in NPPES registry
Profile completeness28% of score
83% of core fields populated
Practice footprint17% of score
1 documented practice location
Medicare service volume (vs. specialty peers)28% of score
88 Medicare services, 2024 (ranked within specialty)

Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.

What this provider does (Medicare)

Based on Medicare fee-for-service claims, 2024; not all care is captured.

Service (HCPCS)	Medicare services	Typical Medicare-allowed (2024)
Critical Care, First 30-74 Minutes99291	42	$238
Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232	32	$87
Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222	14	$146

Typical Medicare-allowed amounts for these services range $87–$238 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.

Enumerated: 2013-04-24
Last updated: 2018-05-30

Frequently asked questions

What is Amy Liang's NPI number?: Amy Liang's National Provider Identifier (NPI) is 1346684073, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
What is Amy Liang's specialty?: Amy Liang is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
Where is Amy Liang located?: Amy Liang's practice location on file with NPPES is 20 York St, New Haven, CT 06510.
What is Amy Liang's phone number?: The practice phone number listed in the NPPES registry for Amy Liang is (203) 688-4242.
Does Amy Liang accept Medicare?: Amy Liang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
Is Amy Liang's NPI active?: Yes — Amy Liang's NPI (1346684073) is active in the NPPES registry as of the last update on 2018-05-30.

Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

What this provider does (Medicare)

Registry dates

Frequently asked questions

Specialties & taxonomies

Frequently asked questions

Profile Score

What this provider does (Medicare)