Dr. Diane E. Weissman, MD
- Part D claims, 2024
- 386
- Industry payments
- $103
- Affiliated sites
- 1
- Medical groups
- 3
- Insurance carriers
- 7
- Practice address
- 1141 Pear Tree Lane, Napa, CA 94558
- Practice phone
- Call (707) 254-1774
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
CommuniCare+OLE - North Napa Campus
FQHC - Main Site · Napa, California
Find Dr. Weissman's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Diane E. Weissman is a family medicine physician in Napa, California
Dr. Weissman practices at CommuniCare+OLE - North Napa Campus in Napa, California.
Dr. Weissman's NPI, 1689668048, was assigned on August 31, 2005. Dr. Weissman graduated from The Warren Alpert Medical School of Brown University in 1997. Dr. Weissman holds Hawaii license MD-23863.
- NPI
- 1689668048NPI Registry (opens in a new tab)
- NPI enumeration date
- August 31, 2005
- NPI status
- Active
- Practice phone
- (707) 254-1774
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Diane E. Weissman practices at CommuniCare+OLE - North Napa Campus in Napa, California
Dr. Weissman's primary practice is CommuniCare+OLE - North Napa Campus, at 1141 Pear Tree Lane, Napa, CA 94558 in Napa County. The practice phone is (707) 254-1774.
- CommuniCare+OLE - North Napa Campus1141 Pear Tree Lane, Napa, CA 94558 · Napa CountyPhone(707) 254-1774
Source: Dmand AI Affiliation Data
Dr. Diane E. Weissman is affiliated with 1 site of care and 3 medical groups
Dr. Weissman's primary practice is CommuniCare+OLE - North Napa Campus in Napa, California. The medical group on file is CommuniCare+OLE. Dmand AI also links Dr. Weissman to 2 more medical groups, each named with a free account. Dr. Weissman's employer is on file too: a community health center (fqhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Diane E. Weissman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Weissman practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| CommuniCare+OLE - North Napa Campus | Available with a free account |
| +2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Diane E. Weissman is one of 15,680 family medicine physicians in California
Family medicine is Dr. Weissman's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Weissman is board certified in family medicine by the American Board of Family Medicine. Dmand AI has Dr. Weissman's licenses on file in 5 states: Hawaii, Arizona, California, Northern Mariana Islands and Colorado.
Specialties and state licenses
- Family medicine, HawaiiPrimary
- Arizona license
- California license
- Northern Mariana Islands license
- Colorado license
Clinical focus
Dmand AI lists acute skin infection, anxiety, arthritis, chronic diabetes, chronic hypertension, contact dermatitis, coronary artery disease and diabetic emergency among the conditions Dr. Weissman treats.
Family medicine physicians near Dr. Weissman
Counts of family medicine physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Diane E. Weissman's patients have a median age of 50
Across all payers, Dmand AI patient panel data puts Dr. Weissman's median patient age at 50, with 53% women.
Dr. Weissman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 50
Patient panel by sex, all payers
- Women53%
- Men45%
Source: Dmand AI Patient Panel Data
Dr. Diane E. Weissman wrote 386 Medicare Part D claims in 2024
In 2024, Dr. Weissman wrote 386 Medicare Part D claims for 130 patients. 81% of them were for generic drugs. CMS names the drug for 169 of them, across 8 drugs with 11 or more claims each, at $1,457 in total drug cost. In 2023, CMS named 210 claims across 11 drugs.
Dr. Weissman's Part D claims by kind of drug, 2024
- Generic312 claims81%
- Brand-name62 claims16%
- Other12 claims3%
Dr. Weissman's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Weissman's Part D claims, 2024
- Antibiotics4%15 of 386 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2102024: 16920%
Drugs named by CMS: 8 in 2024, 11 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Diane E. Weissman received $103 in industry payments in 2016
CMS Open Payments shows 2 general payments to Dr. Weissman from 2 drug and device companies in 2016. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $84.
Companies that paid Dr. Weissman the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Diane E. Weissman graduated from The Warren Alpert Medical School of Brown University
Dr. Weissman graduated from The Warren Alpert Medical School of Brown University in 1997.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Diane E. Weissman accepts plans from 7 insurance carriers
Dr. Weissman is in network with 7 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and Elevance. PPO plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- Elevance
- HCSC
- CMS Medicare
- Hawaii Medical Service Association
- United Healthcare
Plan types Dr. Weissman accepts, by number of carriers
- PPO6
- Medicare5
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Diane E. Weissman's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Diane E. Weissman
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Diane E. Weissman's NPI number?
Dr. Diane E. Weissman's NPI number is 1689668048. It was assigned on August 31, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Diane E. Weissman?
Dr. Diane E. Weissman is a family medicine physician in Napa, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Diane E. Weissman practice?
Dr. Weissman practices at 1141 Pear Tree Lane, Napa, CA 94558. Dr. Weissman's primary practice is CommuniCare+OLE - North Napa Campus in Napa, California. Dmand AI also links Dr. Weissman to 2 medical groups.
What is Dr. Diane E. Weissman's office phone number?
The practice phone on file for Dr. Weissman is (707) 254-1774.
What is Dr. Diane E. Weissman's medical license number?
Dr. Weissman holds Hawaii license MD-23863, one of the licenses on file in 5 states.
Which states has Dr. Diane E. Weissman been licensed in?
Dmand AI has state licenses on file for Dr. Weissman in Hawaii (2023 to 2026), Arizona (2011 to 2026), California (2000 to 2026), Northern Mariana Islands (2021 to 2023) and Colorado (1998 to 2005).
What medical group is Dr. Diane E. Weissman part of?
Dr. Weissman is linked to CommuniCare+OLE. Dmand AI links Dr. Weissman to 2 more medical groups.
Is Dr. Diane E. Weissman board certified?
Yes. Dr. Weissman is board certified in family medicine by the American Board of Family Medicine.
Where did Dr. Diane E. Weissman go to medical school?
Dr. Weissman graduated from The Warren Alpert Medical School of Brown University in 1997.
What drugs does Dr. Diane E. Weissman prescribe most?
In 2024 Medicare Part D data, Dr. Weissman's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.
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Has Dr. Diane E. Weissman received payments from drug or device companies?
CMS Open Payments shows $103 in general payments to Dr. Weissman from 2 companies from 2016 to 2016. The largest total came from Gilead Sciences, Inc.
How long has Dr. Diane E. Weissman been practicing?
Dr. Weissman graduated from medical school in 1997, 29 years ago.
What insurance does Dr. Diane E. Weissman accept?
Dr. Weissman is in network with 7 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and Elevance. PPO plans come from the most carriers, 6. Check the plan with the practice before a visit.
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