Dr. Richard T. Zweig, MD
- Part D claims, 2024
- 22
- Hospital affiliations
- 1
- Industry payments
- $26
- Medical group
- 1
- Insurance carriers
- 4
- Practice address
- 8465 Old Redwood Highway, Suite 320, Windsor, CA 95492
- Practice phone
- Call (707) 687-2499
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Alliance Medical Center - Windsor
FQHC - Main Site · Windsor, California
Find Dr. Zweig'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. Richard T. Zweig is a rheumatologist in Windsor, California
Dr. Zweig practices at Alliance Medical Center - Windsor in Windsor, California.
Dr. Zweig's NPI, 1124102298, was assigned on October 25, 2006. Dr. Zweig graduated from Albert Einstein College of Medicine in 1976. Dr. Zweig holds California license G36363.
- NPI
- 1124102298NPI Registry (opens in a new tab)
- NPI enumeration date
- October 25, 2006
- NPI status
- Active
- Practice phone
- (707) 687-2499
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1976
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Richard T. Zweig practices at Alliance Medical Center - Windsor in Windsor, California
Dr. Zweig's primary practice is Alliance Medical Center - Windsor, at 8465 Old Redwood Highway, Suite 320, Windsor, CA 95492 in Sonoma County. The practice phone is (707) 687-2499.
- Alliance Medical Center - Windsor8465 Old Redwood Highway, Suite 320, Windsor, CA 95492 · Sonoma CountyPhone(707) 687-2499
Source: Dmand AI Affiliation Data
Dr. Richard T. Zweig is affiliated with 2 sites of care and 1 medical group
Dr. Zweig's primary practice is Alliance Medical Center - Windsor in Windsor, California. Dr. Zweig is also affiliated with Santa Rosa Medical Center. The medical group on file is Santa Rosa Community Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Richard T. Zweig's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Zweig practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Alliance Medical Center - Windsor | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Richard T. Zweig is one of 821 rheumatologists in California
Rheumatology is Dr. Zweig's primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Zweig is board certified in internal medicine by the American Board of Internal Medicine. Dr. Zweig is licensed in California.
Specialties and state licenses
- Rheumatology, CaliforniaPrimary
Clinical focus
Dmand AI lists anxiety and arthritis among the conditions Dr. Zweig treats.
Rheumatologists near Dr. Zweig
Counts of rheumatologists 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. Richard T. Zweig's patients have a median age of 54
Across all payers, Dmand AI patient panel data puts Dr. Zweig's median patient age at 54, with 69% women.
Dr. Zweig's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 54
Patient panel by sex, all payers
- Women69%
- Men23%
Source: Dmand AI Patient Panel Data
Dr. Richard T. Zweig wrote 22 Medicare Part D claims in 2024
In 2024, Dr. Zweig wrote 22 Medicare Part D claims. 86% of them were for generic drugs. They cover 2 drugs, with $1,973 in total drug cost.
Dr. Zweig's Part D claims by kind of drug, 2024
- Generic19 claims86%
- Brand-name and other3 claims14%
Dr. Zweig's most prescribed drugs by claims, 2016
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
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. Richard T. Zweig received $26 in industry payments in 2024
CMS Open Payments shows 1 general payment to Dr. Zweig from 1 drug or device company in 2024. Food and beverage make up the largest share, 100% of the total. ViiV Healthcare Company paid the most, $26.
Companies that paid Dr. Zweig the most, 2024 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Richard T. Zweig has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Zweig, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Zweig
- 2011
- CMS Stage 1 2012
- Undated
- ACR Fellow
Source: Dmand AI Professional Profile Data
Dr. Richard T. Zweig graduated from Albert Einstein College of Medicine
Dr. Zweig graduated from Albert Einstein College of Medicine in 1976. Dr. Zweig is a member of ACR.
- Medical school
- Board certified in internal medicine
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Dr. Richard T. Zweig accepts plans from 4 insurance carriers
Dr. Zweig is in network with 4 carriers, including United Healthcare, Aetna and Blue Cross and Blue Shield of Kansas City. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
- United Healthcare
- Aetna
- Blue Cross and Blue Shield of Kansas City
- HCSC
Plan types Dr. Zweig accepts, by number of carriers
- HMO2
- PPO2
- EPO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Richard T. Zweig'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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Richard T. Zweig
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. Richard T. Zweig's NPI number?
Dr. Richard T. Zweig's NPI number is 1124102298. It was assigned on October 25, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Richard T. Zweig?
Dr. Richard T. Zweig is a rheumatologist in Windsor, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Richard T. Zweig practice?
Dr. Zweig practices at 8465 Old Redwood Highway, Suite 320, Windsor, CA 95492. Dr. Zweig's primary practice is Alliance Medical Center - Windsor in Windsor, California.
What is Dr. Richard T. Zweig's office phone number?
The practice phone on file for Dr. Zweig is (707) 687-2499.
What is Dr. Richard T. Zweig's medical license number?
Dr. Zweig holds California license G36363.
Which hospitals is Dr. Richard T. Zweig affiliated with?
Dr. Zweig is affiliated with Santa Rosa Medical Center.
What medical group is Dr. Richard T. Zweig part of?
Dr. Zweig is linked to Santa Rosa Community Health.
Is Dr. Richard T. Zweig board certified?
Yes. Dr. Zweig is board certified in internal medicine by the American Board of Internal Medicine.
Where did Dr. Richard T. Zweig go to medical school?
Dr. Zweig graduated from Albert Einstein College of Medicine in 1976.
What drugs does Dr. Richard T. Zweig prescribe most?
In 2016 Medicare Part D data, Dr. Zweig's most prescribed drugs by claims were Prednisone and Allopurinol.
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Has Dr. Richard T. Zweig received payments from drug or device companies?
CMS Open Payments shows $26 in general payments to Dr. Zweig from 1 company from 2024 to 2024. The largest total came from ViiV Healthcare Company.
How long has Dr. Richard T. Zweig been practicing?
Dr. Zweig graduated from medical school in 1976, 50 years ago.
What insurance does Dr. Richard T. Zweig accept?
Dr. Zweig is in network with 4 carriers, including United Healthcare, Aetna and Blue Cross and Blue Shield of Kansas City. HMO plans come from the most carriers, 2. Check the plan with the practice before a visit.
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