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DIANA PEY-LIN LO M.D.
NPI 1659696508
Obstetrics & Gynecology in Fremont, CA

Active since April 05, 2010PECOS EnrolledAccepts Medicare Assignment
3200 KEARNEY STREET, FREMONT, CA 94538(510) 490-1222 Get Directions Write a Review

NPPES record last updated: May 28, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Diana Pey-lin Lo M.d. NPPES

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

DIANA PEY-LIN LO M.D. (NPI 1659696508) is an individual obstetrics & gynecology provider in Fremont, California, licensed in California (A130970) and active in the NPI registry since April 2010. She is enrolled in Medicare PECOS and is a graduate of Tufts University School Of Medicine (2010).

NPPES Registry Identity

NPI1659696508
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDIANA PEY-LIN LOCredential: M.D.
Location Address3200 KEARNEY STREETFremont, CA 94538-2299
Mailing Address325 Distel CirLos Altos, CA 94022-1408 · (510) 498-2182
Phone(510) 490-1222
Sole ProprietorNo
Medical School CMSTufts University School Of MedicineGraduated 2010
Enumeration DateApril 5, 2010
Last NPPES UpdateMay 28, 2020
NPPES CertifiedMay 28, 2020
✔ NPI 1659696508 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in CA · A130970
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
3200 KEARNEY STREET, Fremont, CA 94538
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Diana Pey-lin Lo 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 ID1951521749
PECOS Enrollment IDI20140929002433
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 Diana Lo reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Sutter Bay Medical Foundation
0.1 mi
Ambulatory Surgical
3140 KEARNEY ST
Fremont, CA 94538
  • Reassigned Medicare billing, California enrollment
  • Also billed through NPI 1013950807 (California)
  • 313 clinicians in this Medicare group
NPI 1497996524 (510) 498-2819

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

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.
51 services19 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 94538 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 13

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

REBECCA L. SHPALL MD
Dermatology
3200 KEARNEY STREET
FREMONT, CA 94538
Alameda County (510) 490-1222
SUNNY JUN MD
Obstetrics & Gynecology (Reproductive Endocrinology)
3200 KEARNEY STREET
FREMONT, CA 94538
Alameda County (510) 490-1222
DR. VINEET S KAMBOJ D.P.M.
Podiatrist (Foot & Ankle Surgery)
3200 KEARNEY STREET
FREMONT, CA 94538
Alameda County (510) 490-1222
JENNIFER LOUIE M.D.
Pediatrics
3200 KEARNEY STREET
FREMONT, CA 94538
Alameda County (510) 490-1222
DR. ARIO BARZIN M.D,
Plastic Surgery
3200 KEARNEY STREET
FREMONT, CA 94538
Alameda County (510) 490-1222
DR. NALLY LIN TSANG M.D.
Internal Medicine
3200 KEARNEY STREET
FREMONT, CA 94538
Alameda County (510) 490-1222
DARLENE C. LEE MD
Pediatrics
3200 KEARNEY STREET
FREMONT, CA 94538
Alameda County (510) 490-1222
MATTHEW HARRISON KANZLER MD
Dermatology
3200 KEARNEY STREET, DERMATOLOGY DEPARTMENT
FREMONT, CA 94538
Alameda County (510) 490-1222

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 Diana Lo's NPI number?

The NPI number for Diana Lo is 1659696508. It was assigned to this individual provider in the NPPES registry on April 5, 2010.

Where is Diana Lo located?

Diana Lo practices at 3200 Kearney Street, Fremont, CA 94538. The listed phone number is (510) 490-1222.

What is Diana Lo's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Diana Lo enrolled in Medicare?

Yes. Diana Lo 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.

Which organization bills Medicare for Diana Lo's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Diana Lo reassigns Medicare benefits to Sutter Bay Medical Foundation (Fremont, 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 Diana Lo'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 Diana Lo was last updated on May 28, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.