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DIANE E WEISSMAN M.D.
NPI 1689668048
Family Medicine in Napa, CA

Active since August 31, 2005PECOS Enrolled
1141 PEAR TREE LN, NAPA, CA 94558(707) 254-1770 Get Directions Write a Review

NPPES record last updated: January 26, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jan 26, 2026, Aug 19, 2020 (2 updates tracked since 2020).

About Diane E Weissman M.d. NPPES

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

DIANE E WEISSMAN M.D. (NPI 1689668048) is an individual family medicine provider in Napa, California, licensed in California (A72337) and active in the NPI registry since August 2005. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1689668048
Entity TypeIndividualFemale
Primary Taxonomy207Q00000X
Provider Legal NameDIANE E WEISSMANCredential: M.D.
Location Address1141 PEAR TREE LNNapa, CA 94558-6484
Mailing Address1141 Pear Tree LnNapa, CA 94558-6484 · (707) 254-1770
Phone(707) 254-1770
Sole ProprietorNo
Enumeration DateAugust 31, 2005
Last NPPES UpdateJanuary 26, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 26, 2026
✔ NPI 1689668048 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
Licenses✔ Licensed in CA · A72337✔ Licensed in AZ · 45087✔ Licensed in HI · MD-23863
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
1141 PEAR TREE LN, Napa, CA 94558
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Other Identifiers 1

Medicaid442217AZ

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Diane E Weissman M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 94558 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
$98.97 typical visit price
range $65.08 – $192.16
Typical copayment $24.74 (range $16.27 – $48.04)
Most-billed visit code 99203
Established Patient
$113.15 typical visit price
range $21.86 – $157.83
Typical copayment $28.28 (range $5.46 – $39.45)
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.

Referred Medical Equipment & Supplies CMS DME claims 2

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Portable gaseous oxygen system, rental; includes portable container, regulator, flowmeter, humidifier, cannula or mask, and tubing E0431
DME-Oxygen and Supplies · category DC000N
1 supplier12 claims12 services$16.03 avg. paid by Medicare
Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate E1390
DME-Oxygen and Supplies · category DC002N
1 supplier12 claims12 services$81.25 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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.

JORGE EFRAIN ROMAN NP
Nurse Practitioner (Family)
1141 PEAR TREE LN, SUITE 100
NAPA, CA 94558
Napa County (707) 254-1770
GUADALUPE LOPEZ HERNANDEZ
Registered Nurse
1141 PEAR TREE LN
NAPA, CA 94558
Napa County (707) 254-1770
BIBIANA D BARRERA MENDEZ
Registered Nurse
1141 PEAR TREE LN
NAPA, CA 94558
Napa County (707) 254-1770
DR. JANICE H. KIM M.D.
Pediatrics
1141 PEAR TREE LN
NAPA, CA 94558
Napa County (707) 254-1770
ANGEL EDGARDO BECERRA MARTINEZ RDN
Dietitian, Registered
1141 PEAR TREE LN
NAPA, CA 94558
Napa County (707) 254-1770
JENNIFER TSANG F.N.P.
Nurse Practitioner (Family)
1141 PEAR TREE LN, #100
NAPA, CA 94558
Napa County (707) 254-1770
MARIA ELIA RUBIO
Case Manager/Care Coordinator
1141 PEAR TREE LN, SUITE 100
NAPA, CA 94558
Napa County (707) 254-1770
MS. MARNIE GRANADOS MD
Pediatrics
1141 PEAR TREE LN, #100
NAPA, CA 94558
Napa County (949) 351-0403

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 Diane Weissman's NPI number?

The NPI number for Diane Weissman is 1689668048. It was assigned to this individual provider in the NPPES registry on August 31, 2005.

Where is Diane Weissman located?

Diane Weissman practices at 1141 Pear Tree Ln, Napa, CA 94558. The listed phone number is (707) 254-1770.

What is Diane Weissman's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Diane Weissman enrolled in Medicare?

Yes. Diane Weissman is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Diane Weissman was last updated on January 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.