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DR. CATHERINA YANG GREENBERG MD
NPI 1629606538
Otolaryngology in Menlo Park, CA

Active since March 28, 2020PECOS Enrolled
657 OAK GROVE AVE, MENLO PARK, CA 94025(650) 668-2258 Get Directions Write a Review

NPPES record last updated: October 2, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Apr 1, 2020, Mar 28, 2020 (2 updates tracked since 2020).

About Dr. Catherina Yang Greenberg Md NPPES

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

DR. CATHERINA YANG GREENBERG MD (NPI 1629606538) is an individual otolaryngology provider in Menlo Park, California, licensed in California (A201535) and active in the NPI registry since March 2020. She is enrolled in Medicare PECOS and is a graduate of Other (2020).

NPPES Registry Identity

NPI1629606538
Entity TypeIndividualFemale
Primary Taxonomy207Y00000X
Provider Legal NameDR. CATHERINA YANG GREENBERGCredential: MD
Location Address657 OAK GROVE AVEMenlo Park, CA 94025-4317
Mailing Address456 Waverley StMenlo Park, CA 94025-3718 · (516) 650-2199
Phone(650) 668-2258
Sole ProprietorYes
Medical School CMSOtherGraduated 2020
Enumeration DateMarch 28, 2020
Last NPPES UpdateOctober 2, 20252 updates tracked since enumeration
NPPES CertifiedOctober 2, 2025
✔ NPI 1629606538 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
License✔ Licensed in CA · A201535
Definition
An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.
657 OAK GROVE AVE, Menlo Park, CA 94025
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Other Names 1

Former Name (1)Catherina Yang Md

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Catherina Yang Greenberg Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID1850885625
PECOS Enrollment IDI20251209003560
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 Reassignments

2

Medicare enrollment records show Catherina Greenberg reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

County Of Santa Clara
3.0 mi
Mental Health (Including Community Mental Health Center)
231 GRANT AVENUE
Palo Alto, CA 94306
  • Reassigned Medicare billing, California enrollment
  • 2,460 clinicians in this Medicare group
NPI 1144330614 (650) 321-5545
Physician Affiliate Group Of New York PC
2,570 mi
Dietitian, Registered
506 LENOX AVE
New York, NY 10037
  • Reassigned Medicare billing, New York enrollment
  • 2,094 clinicians in this Medicare group
NPI 1013375526 (212) 939-2467

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94025 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
$153.83 typical visit price
range $69.00 – $202.35
Typical copayment $38.45 (range $17.25 – $50.58)
Most-billed visit code 99204
Established Patient
$84.91 typical visit price
range $23.44 – $166.46
Typical copayment $21.22 (range $5.86 – $41.61)
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

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

THUY MY NGOC PHUONG PA-C
Physician Assistant
657 OAK GROVE AVE
MENLO PARK, CA 94025
San Mateo County (650) 668-2258

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 Catherina Greenberg's NPI number?

The NPI number for Catherina Greenberg is 1629606538. It was assigned to this individual provider in the NPPES registry on March 28, 2020. The provider is also known as Catherina Yang MD.

Where is Catherina Greenberg located?

Catherina Greenberg practices at 657 Oak Grove Ave, Menlo Park, CA 94025. The listed phone number is (650) 668-2258.

What is Catherina Greenberg's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Is Catherina Greenberg enrolled in Medicare?

Yes. Catherina Greenberg is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Catherina Greenberg's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Catherina Greenberg reassigns Medicare benefits to 2 organizations: County Of Santa Clara (Palo Alto, CA) and Physician Affiliate Group Of New York PC (New York, NY). Each 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 Catherina Greenberg's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Catherina Greenberg was last updated on October 2, 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.