DR. KOK-TONG LING M.D.
NPI 1164400263
Internal Medicine - Nephrology in San Francisco, CA

Q: What is Kok-tong Ling's NPI number?

The NPI number for Kok-tong Ling is 1164400263. It was assigned to this individual provider in the NPPES registry on January 9, 2006.

Q: What is Kok-tong Ling's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Q: When was this NPI record last updated?

The NPPES record for Kok-tong Ling was last updated on October 24, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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 January 09, 2006PECOS EnrolledAccepts Medicare AssignmentCLIA 05D0929392 · Waiver

450 SUTTER ST., SUITE 935, SAN FRANCISCO, CA 94108(415) 433-7761(415) 433-7763 Get Directions Write a Review

NPPES record last updated: October 24, 2007. Verified against the NPPES registry weekly; last sync: August 09, 2026.

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About Dr. Kok-tong Ling M.d. NPPES

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

DR. KOK-TONG LING M.D. (NPI 1164400263) is an individual nephrology provider in San Francisco, California, licensed in California (A45478) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS, holds a CLIA Waiver certificate valid through June 11, 2027, and is a graduate of Other (1984).

NPPES Registry Identity

NPI1164400263

Entity TypeIndividualMale

Primary Taxonomy207RN0300X

Provider Legal NameDR. KOK-TONG LINGCredential: M.D.

Location Address450 SUTTER ST., SUITE 935San Francisco, CA 94108

Mailing Address450 Sutter St., Suite 935San Francisco, CA 94108 · (415) 433-7761 · Fax (415) 433-7763

Phone(415) 433-7761

Fax(415) 433-7763

Sole ProprietorYes

Medical School CMSOtherGraduated 1984

Enumeration DateJanuary 9, 2006

Last NPPES UpdateOctober 24, 2007

✔ NPI 1164400263 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · NephrologyAllopathic & Osteopathic Physicians

Taxonomy Code207RN0300X

License✔ Licensed in CA · A45478

Definition

An internist who treats disorders of the kidney, high blood pressure, fluid and mineral balance and dialysis of body wastes when the kidneys do not function. This specialist consults with surgeons about kidney transplantation.

Also ListedInternal MedicineTaxonomy 207R00000X · License A45478 (CA)

450 SUTTER ST., SUITE 935, San Francisco, CA 94108

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Other Identifiers 3

Medicare ID-Type Unspecified00A454780CA

Medicaid00A454780CA

Medicare UPINF15769CA

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. Kok-tong Ling 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 ID9739260662

PECOS Enrollment IDI20080117000268

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.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D0929392

Kok-Tong Ling MD · San Francisco, CA

Active · expires Jun 11, 2027

CLIA Number05D0929392

Laboratory TypePhysician Office

Certificate Effective DateJune 12, 2025

Certificate Expiration DateJune 11, 2027

Laboratory DirectorKoktong Ling MD

Laboratory Phone(415) 433-7761

Laboratory LocationKok-Tong Ling MD450 Sutter Street Suite 935, San Francisco, CA 94108

CLIA data matches this NPI record on: Address Name Phone

This certificate is issued to a laboratory to perform only waived tests.

Areas of Expertise CMS Part B claims 2

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.

Dialysis services, 2-3 physician visits per month (20 years or older) 90961

Dialysis is a treatment that performs the function of healthy kidneys if they're not working properly. It removes waste and excess fluid from your blood. 2-3 physician visits per month are recommended for monitoring your health and adjusting your treatment as needed. This service is available for those aged 20 years and older.

226 services25 patients

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

96 services43 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94108 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

$119.48 typical visit price

range $23.44 – $166.46

Typical copayment $29.87 (range $5.86 – $41.61)

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.

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 Kok-tong Ling's NPI number?

The NPI number for Kok-tong Ling is 1164400263. It was assigned to this individual provider in the NPPES registry on January 9, 2006.

Where is Kok-tong Ling located?

Kok-tong Ling practices at 450 Sutter St., Suite 935, San Francisco, CA 94108. The listed phone number is (415) 433-7761.

What is Kok-tong Ling's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.

Is Kok-tong Ling enrolled in Medicare?

Yes. Kok-tong Ling 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.

Does Kok-tong Ling hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D0929392) is associated with this NPI, valid through June 11, 2027. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for Kok-tong Ling was last updated on October 24, 2007. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years 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.