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RYAN S. LUM MD
NPI 1841374824
Internal Medicine in San Rafael, CA

Active since October 25, 2006PECOS EnrolledAccepts Medicare Assignment
99 MONTECILLO RD, SAN RAFAEL, CA 94903(415) 444-2000 Get Directions Write a Review

NPPES record last updated: December 13, 2021. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Ryan S. Lum Md NPPES

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

RYAN S. LUM MD (NPI 1841374824) is an individual internal medicine provider in San Rafael, California, licensed in California (A74527) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS and is a graduate of Tufts University School Of Medicine (1999).

NPPES Registry Identity

NPI1841374824
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameRYAN S. LUMCredential: MD
Location Address99 MONTECILLO RDSan Rafael, CA 94903-3308
Mailing Address1800 Harrison St Fl 7Oakland, CA 94612-3466 · (510) 625-6262
Phone(415) 444-2000
Sole ProprietorNo
Medical School CMSTufts University School Of MedicineGraduated 1999
Enumeration DateOctober 25, 2006
Last NPPES UpdateDecember 13, 2021
✔ NPI 1841374824 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · A74527
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
99 MONTECILLO RD, San Rafael, CA 94903
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Other Identifiers 1

Medicaid00A745270CA

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

Ryan S. Lum Md 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 ID5193911923
PECOS Enrollment IDI20101118001442
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 94903 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
$154.04 typical visit price
range $69.07 – $202.63
Typical copayment $38.51 (range $17.26 – $50.65)
Most-billed visit code 99204
Established Patient
$119.61 typical visit price
range $23.44 – $166.64
Typical copayment $29.90 (range $5.86 – $41.66)
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.

MS. MARTA JUDY FRIEDMAN LCSW, JD
Social Worker (Clinical)
99 MONTECILLO RD
SAN RAFAEL, CA 94903
Marin County (415) 444-4396
DR. DAVID GREGORY MOSKOWITZ M.D.
Dermatology
99 MONTECILLO RD
SAN RAFAEL, CA 94903
Marin County (415) 444-2939
MICHELLE S. PARAISO MD
Anesthesiology
99 MONTECILLO RD
SAN RAFAEL, CA 94903
Marin County (415) 444-2000
CHERYL KAHN MD
Radiology (Diagnostic Radiology)
99 MONTECILLO RD
SAN RAFAEL, CA 94903
Marin County (415) 444-2000
PETER REIDY MD
Hospitalist
99 MONTECILLO RD
SAN RAFAEL, CA 94903
Marin County (415) 444-4885
MRS. JENNIFER KATE MOORE CCC SLP
Speech-Language Pathologist
99 MONTECILLO RD
SAN RAFAEL, CA 94903
Marin County (415) 889-3833
INNA YAKOVLEVNA SHEINSON MD
Internal Medicine
99 MONTECILLO RD
SAN RAFAEL, CA 94903
Marin County (415) 444-2000
JENNIFER ALEXANDRIA CLARK
Nurse Anesthetist, Certified Registered
99 MONTECILLO RD
SAN RAFAEL, CA 94903
Marin County (925) 229-7693

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 Ryan Lum's NPI number?

The NPI number for Ryan Lum is 1841374824. It was assigned to this individual provider in the NPPES registry on October 25, 2006.

Where is Ryan Lum located?

Ryan Lum practices at 99 Montecillo Rd, San Rafael, CA 94903. The listed phone number is (415) 444-2000.

What is Ryan Lum's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Ryan Lum enrolled in Medicare?

Yes. Ryan Lum 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 Ryan Lum was last updated on December 13, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.