DR. TIMOTHY CHAO MD, PHD
NPI 1396308326
Pathology - Anatomic Pathology & Clinical Pathology in Philadelphia, PA

Q: What is Timothy Chao's NPI number?

The NPI number for Timothy Chao is 1396308326. It was assigned to this individual provider in the NPPES registry on April 16, 2019.

Q: What is Timothy Chao's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Q: When was this NPI record last updated?

The NPPES record for Timothy Chao was last updated on May 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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 16, 2019PECOS EnrolledAccepts Medicare Assignment

3400 SPRUCE ST, PHILADELPHIA, PA 19104(215) 662-6503(215) 349-5910 Get Directions Write a Review

NPPES record last updated: May 30, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: May 30, 2025, Apr 16, 2019 (2 updates tracked since 2019).

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About Dr. Timothy Chao Md, Phd NPPES

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

DR. TIMOTHY CHAO MD, PHD (NPI 1396308326) is an individual anatomic pathology & clinical pathology provider in Philadelphia, Pennsylvania, licensed in Pennsylvania (MD479787) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with Hospital Of Univ Of Pennsylvania, and is a graduate of Perelman School Of Med At The University Of Pennsylvania (2019).

NPPES Registry Identity

NPI1396308326

Entity TypeIndividualMale

Primary Taxonomy207ZP0102X

Provider Legal NameDR. TIMOTHY CHAOCredential: MD, PHD

Location Address3400 SPRUCE STPhiladelphia, PA 19104-4206

Mailing Address3400 Spruce St, 6 FoundersPhiladelphia, PA 19104-4238 · (206) 214-5697

Phone(215) 662-6503

Fax(215) 349-5910

Sole ProprietorNo

Medical School CMSPerelman School Of Med At The University Of PennsylvaniaGraduated 2019

Enumeration DateApril 16, 2019

Last NPPES UpdateMay 30, 20252 updates tracked since enumeration

NPPES CertifiedMay 30, 2025

✔ NPI 1396308326 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPathology · Anatomic Pathology & Clinical PathologyAllopathic & Osteopathic Physicians

Taxonomy Code207ZP0102X

License✔ Licensed in PA · MD479787

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.

3400 SPRUCE ST, Philadelphia, PA 19104

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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

Dr. Timothy Chao 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 ID4082948120

PECOS Enrollment IDI20240726002918

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 7

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.

Pathology examination of tissue using a microscope, intermediate complexity 88305

A pathology examination of tissue with intermediate complexity involves studying a small sample of your body tissue under a microscope. This helps in identifying any abnormal cells or signs of disease. It's a detailed process requiring expert analysis to ensure accurate results.

679 services246 patients

Special stained specimen slides to examine tissue, each additional procedure 88341

Special stained specimen slides are used to analyze tissue in detail. In this process, extra procedures may be needed for a more thorough examination. These involve applying special stains to the tissue on slides, enhancing specific elements for closer study.

173 services45 patients

Special stained specimen slides to examine tissue, initial procedure 88342

This procedure involves the use of specially stained slides to examine tissue samples. The initial process involves obtaining a small tissue sample from your body. This sample is then placed on a slide and stained with special dyes to highlight different structures and elements. The stained slide is then examined under a microscope to help diagnose any potential health issues.

87 services68 patients

Pathology examination of tissue using a microscope, moderately high complexity 88307

A pathology examination of tissue with moderate complexity involves a detailed study of a small tissue sample from your body. Using a microscope, experts analyze the tissue's structure and cells to identify any abnormalities. This helps in diagnosing various health conditions accurately.

37 services31 patients

Special stained specimen slides to examine tissue including interpretation and report 88313

Special stained specimen slides are used to examine tissue samples. This involves applying special dyes to the tissue, which helps to highlight certain features under a microscope. The findings are then interpreted and a report is provided. This can aid in diagnosing various health conditions.

33 services19 patients

Pathology examination of tissue using a microscope, high complexity 88309

A high complexity pathology examination involves studying body tissue under a microscope to identify any abnormalities. This intricate process helps in diagnosing various conditions and deciding on the best treatment plan.

20 services16 patients

Hospital Affiliations CMS Care Compare 3

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

Hospital Of Univ Of Pennsylvania

Acute Care Hospitals · Philadelphia, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390111

Location34th & Spruce StsPhiladelphia, PA 19104 · Philadelphia County

Emergency services Birthing friendly

Penn Presbyterian Medical Center

Acute Care Hospitals · Philadelphia, PA

5/5 CMS rating

OwnershipVoluntary non-profit - Other

CMS Certification Number390223

Location51 North 39th StreetPhiladelphia, PA 19104 · Philadelphia County

Emergency services

Pennsylvania Hospital

Acute Care Hospitals · Philadelphia, PA

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number390226

Location800 Spruce StreetPhiladelphia, PA 19107 · Philadelphia County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 19104 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

$137.17 typical visit price

range $59.88 – $180.99

Typical copayment $34.29 (range $14.97 – $45.24)

Most-billed visit code 99204

Established Patient

$105.21 typical visit price

range $19.30 – $147.29

Typical copayment $26.30 (range $4.82 – $36.82)

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.

ELIZABETH FOGLIA MD

Pediatrics

3400 SPRUCE ST, 8 RAVDIN
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-3228

JOEL M STEIN MD

Radiology (Diagnostic Radiology)

3400 SPRUCE ST
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-3005

PRISCILLA NELSON M.D.

Anesthesiology

3400 SPRUCE ST, 6 DULLES
PHILADELPHIA, PA 19104

Philadelphia County (215) 349-8310

DR. JASON THOMAS ACKRIVO MD

Internal Medicine (Pulmonary Disease)

3400 SPRUCE ST
PHILADELPHIA, PA 19104

Philadelphia County (215) 614-0871

JEAN-PHILIPPE RICHARD DMD

Student in an Organized Health Care Education/Training Program

3400 SPRUCE ST
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-6176

LEAH M LOPEZ PA-C

Physician Assistant (Medical)

3400 SPRUCE ST, 4 SILVERSTEIN
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-7870

MONIQUE LORRAINE ROBERTS SALAHUB

Anesthesiology (Critical Care Medicine)

3400 SPRUCE ST
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-4000

JOANIE M GARRATT MD

Radiology (Diagnostic Radiology)

3400 SPRUCE ST
PHILADELPHIA, PA 19104

Philadelphia County (215) 662-3000

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 Timothy Chao's NPI number?

The NPI number for Timothy Chao is 1396308326. It was assigned to this individual provider in the NPPES registry on April 16, 2019.

Where is Timothy Chao located?

Timothy Chao practices at 3400 Spruce St, Philadelphia, PA 19104. The listed phone number is (215) 662-6503.

What is Timothy Chao's specialty?

The primary specialty registered for this NPI is Pathology, specializing in Anatomic Pathology & Clinical Pathology, with taxonomy code 207ZP0102X.

Is Timothy Chao enrolled in Medicare?

Yes. Timothy Chao 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.

Is Timothy Chao affiliated with any hospitals?

According to CMS data, Timothy Chao is affiliated with Hospital Of Univ Of Pennsylvania, Penn Presbyterian Medical Center and Pennsylvania Hospital.

When was this NPI record last updated?

The NPPES record for Timothy Chao was last updated on May 30, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.