1. Home
  2. Directory
  3. California
  4. Bakersfield
  5. Otolaryngology
  6. NPI Profile

MR. GARY K ZERLIN MD
NPI 1801873765
Otolaryngology in Bakersfield, CA

Active since December 30, 2005PECOS Enrolled
2103 18TH ST, BAKERSFIELD, CA 93301(661) 327-3448(661) 327-4549 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Mr. Gary K Zerlin Md NPPES

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

MR. GARY K ZERLIN MD (NPI 1801873765) is an individual otolaryngology provider in Bakersfield, California, licensed in California (G35992) and active in the NPI registry since December 2005. He is enrolled in Medicare PECOS and is a graduate of Loma Linda University School Of Medicine (1976).

NPPES Registry Identity

NPI1801873765
Entity TypeIndividualMale
Primary Taxonomy207Y00000X
Provider Legal NameMR. GARY K ZERLINCredential: MD
Location Address2103 18TH STBakersfield, CA 93301
Mailing Address2103 18th StBakersfield, CA 93301 · (661) 327-3448 · Fax (661) 327-4549
Phone(661) 327-3448
Fax(661) 327-4549
Sole ProprietorNo
Medical School CMSLoma Linda University School Of MedicineGraduated 1976
Enumeration DateDecember 30, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1801873765 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
License✔ Licensed in CA · G35992
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.
2103 18TH ST, Bakersfield, CA 93301
Open in Google Maps ↗

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mr. Gary K Zerlin Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID446424691
PECOS Enrollment IDI20111128000195
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 Reassignment

Medicare enrollment records show Gary Zerlin reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kern County Hospital Authority
0.1 mi
General Acute Care Hospital
2011 19TH ST
Bakersfield, CA 93301
  • Reassigned Medicare billing, California enrollment
  • 532 clinicians in this Medicare group
NPI 1538611967 (661) 326-2000

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

Areas of Expertise CMS Part B claims 3

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.

Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
83 services55 patients
Test to assess middle ear function 92567
A test to assess middle ear function, also known as an impedance audiometry, helps evaluate how well your middle ear works. It measures the movement of your eardrum in response to changes in air pressure. This can help identify issues like fluid build-up, ear infections, or eardrum perforations.
39 services30 patients
Diagnostic exam of voice box using a flexible endoscope 31575
This procedure involves a doctor examining your voice box using a flexible endoscope, a thin tube with a light and camera. It's inserted through your nose or mouth to visualize your throat area. It helps detect any abnormalities in your voice box, ensuring optimal vocal health.
15 services14 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93301 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
$135.05 typical visit price
range $59.26 – $178.09
Typical copayment $33.76 (range $14.81 – $44.52)
Most-billed visit code 99204
Established Patient
$73.67 typical visit price
range $19.34 – $145.64
Typical copayment $18.41 (range $4.83 – $36.41)
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.

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 Gary Zerlin's NPI number?

The NPI number for Gary Zerlin is 1801873765. It was assigned to this individual provider in the NPPES registry on December 30, 2005.

Where is Gary Zerlin located?

Gary Zerlin practices at 2103 18th St, Bakersfield, CA 93301. The listed phone number is (661) 327-3448.

What is Gary Zerlin's specialty?

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

Is Gary Zerlin enrolled in Medicare?

Yes. Gary Zerlin is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Gary Zerlin's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Gary Zerlin reassigns Medicare benefits to Kern County Hospital Authority (Bakersfield, CA). The 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 Gary Zerlin'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 Gary Zerlin was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 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.