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

GREGORY LEE CHEN M.D.
NPI 1699853457
Urology in Monterey, CA

Active since November 01, 2006PECOS Enrolled
2 UPPER RAGSDALE DR BLDG E, MONTEREY, CA 93940(831) 333-3040 Get Directions Write a Review

NPPES record last updated: September 25, 2026. Verified against the NPPES registry weekly; last sync: October 11, 2026.

Record update history: Sep 25, 2026, Dec 13, 2021 (2 updates tracked since 2021).

About Gregory Lee Chen M.d. NPPES

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

GREGORY LEE CHEN M.D. (NPI 1699853457) is an individual urology provider in Monterey, California, licensed in California (G84622) and active in the NPI registry since November 2006. He is enrolled in Medicare PECOS, maintains a secondary practice location in Hayward, and is a graduate of Rush Medical College Of Rush University (1992).

NPPES Registry Identity

NPI1699853457
Entity TypeIndividualMale
Primary Taxonomy208800000X
Provider Legal NameGREGORY LEE CHENCredential: M.D.
Location Address2 UPPER RAGSDALE DR BLDG EMonterey, CA 93940-7843
Mailing Address100 Wilson Rd Ste 100Monterey, CA 93940-7885
Phone(831) 333-3040
Sole ProprietorNo
Medical School CMSRush Medical College Of Rush UniversityGraduated 1992
Enumeration DateNovember 1, 2006
Last NPPES UpdateSeptember 25, 20262 updates tracked since enumeration
NPPES CertifiedSeptember 25, 2026
✔ NPI 1699853457 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyUrologyAllopathic & Osteopathic Physicians
Taxonomy Code208800000X
License✔ Licensed in CA · G84622
Definition
A urologist manages benign and malignant medical and surgical disorders of the genitourinary system and the adrenal gland. This specialist has comprehensive knowledge of and skills in endoscopic, percutaneous and open surgery of congenital and acquired conditions of the urinary and reproductive systems and their contiguous structures.
2 UPPER RAGSDALE DR BLDG E, Monterey, CA 93940
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Secondary Practice Location 1

Location 127303 Sleepy Hollow Ave SHayward, CA 94545-4203 · Phone (510) 454-1000

Other Identifiers 1

Medicaid00G846220CA

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

Gregory Lee Chen M.d. 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 ID3476733932
PECOS Enrollment IDI20110215001193
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 93940 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
$139.84 typical visit price
range $61.69 – $184.30
Typical copayment $34.96 (range $15.42 – $46.07)
Most-billed visit code 99204
Established Patient
$76.53 typical visit price
range $20.34 – $151.02
Typical copayment $19.13 (range $5.08 – $37.75)
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 4

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MARY PATRICIA SMITH
Dermatology
2 UPPER RAGSDALE DR BLDG E
MONTEREY, CA 93940
Monterey County (831) 333-3040
GLEN MARTIN MD
Surgery
2 UPPER RAGSDALE DR BLDG E
MONTEREY, CA 93940
Monterey County (831) 647-1123
SHANKAR IAN LOGARAJAH MD
Surgery (Surgical Oncology)
2 UPPER RAGSDALE DR BLDG E
MONTEREY, CA 93940
Monterey County (831) 333-3040
MRS. LAUREN MARIE RUSKELL
Nurse Practitioner (Family)
2 UPPER RAGSDALE DR BLDG E
MONTEREY, CA 93940
Monterey County (831) 333-3040

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 Gregory Chen's NPI number?

The NPI number for Gregory Chen is 1699853457. It was assigned to this individual provider in the NPPES registry on November 1, 2006.

Where is Gregory Chen located?

Gregory Chen practices at 2 Upper Ragsdale Dr Bldg E, Monterey, CA 93940. The listed phone number is (831) 333-3040.

What is Gregory Chen's specialty?

The primary specialty registered for this NPI is Urology with taxonomy code 208800000X.

Is Gregory Chen enrolled in Medicare?

Yes. Gregory Chen 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.

When was this NPI record last updated?

The NPPES record for Gregory Chen was last updated on September 25, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 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.