Dr. James Gregory Tappan, MD
- Part D claims, 2024
- 82
- Publications
- 1
- Insurance carriers
- 11
- State license
- 1
- Year NPI issued
- 2005
- Practice address
- 20 W 3rd Ave, San Mateo, CA 94402-7112
- Practice phone
- Call (650) 347-5065
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Tappan'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. James Gregory Tappan is an OB-GYN in San Mateo, California
Dr. Tappan practices in San Mateo, California.
Dr. Tappan's NPI, 1801880398, was assigned on September 12, 2005. Dr. Tappan's California license number on file is A23884.
- NPI
- 1801880398NPI Registry (opens in a new tab)
- NPI enumeration date
- September 12, 2005
- NPI status
- Active
- Practice phone
- (650) 347-5065
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. James Gregory Tappan's practice address is in San Mateo, California
Dr. Tappan's practice address in the NPI Registry is 20 W 3rd Ave, San Mateo, CA 94402-7112. The practice phone is (650) 347-5065.
- NPI Registry address20 W 3rd Ave, San Mateo, CA 94402-7112Phone(650) 347-5065
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. James Gregory Tappan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tappan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Tappan's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. James Gregory Tappan is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Tappan's primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Tappan is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dr. Tappan has a license on file in California.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
OB-GYNs near Dr. Tappan
Counts of OB-GYNs 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. James Gregory Tappan wrote 82 Medicare Part D claims in 2024
In 2024, Dr. Tappan wrote 82 Medicare Part D claims. 89% of them were for generic drugs. CMS names the drug for 11 of them, across 1 drug with 11 or more claims each, at $407 in total drug cost.
Dr. Tappan's Part D claims by kind of drug, 2024
- Generic73 claims89%
- Brand-name and other9 claims11%
Dr. Tappan's most prescribed drugs by claims, 2017
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. James Gregory Tappan has 1 publication on record
Dmand AI links 1 paper to Dr. Tappan.
Recent publications by Dr. Tappan
See who Dr. Tappan researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Tappan works with, so you can find a warm path to the right OB-GYNs.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. James Gregory Tappan has 9 awards and honors on record
Dmand AI lists 9 awards for Dr. Tappan, most recently President in 1986.
Awards and honors for Dr. Tappan
- 1986
- President
- 1985
- President Elect
- 1984
- Secretary/Treasurer
- 1975
- Two Unit Citation Awards
- 1973
- Outstanding Contributions Award
- Outstanding Contributions Award, March of Dimes
Source: Dmand AI Professional Profile Data
Dr. James Gregory Tappan is board certified in obstetrics & gynecology
Dr. Tappan is a member of American College of Obstetricians and Gynecologists and ACS.
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. James Gregory Tappan accepts plans from 11 insurance carriers
Dr. Tappan is in network with 11 carriers, including United Healthcare, Elevance and Aetna. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
- United Healthcare
- Elevance
- Aetna
- Blue Cross Blue Shield of Michigan
- HCSC
- Alliant Health Plans
- Aspirus Health Plan
- Blue Cross and Blue Shield of Kansas City
- +3 more carriersWith a free account
Plan types Dr. Tappan accepts, by number of carriers
- PPO7
- HMO6
- EPO3
- POS2
- Medicare1
Source: Dmand AI Insurance Network Data
Sources for Dr. James Gregory Tappan'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice 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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. James Gregory Tappan
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. James Gregory Tappan's NPI number?
Dr. James Gregory Tappan's NPI number is 1801880398. It was assigned on September 12, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. James Gregory Tappan?
Dr. James Gregory Tappan is an OB-GYN in San Mateo, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. James Gregory Tappan practice?
Dr. Tappan practices at 20 W 3rd Ave, San Mateo, CA 94402-7112.
What is Dr. James Gregory Tappan's office phone number?
The practice phone on file for Dr. Tappan is (650) 347-5065.
What is Dr. James Gregory Tappan's medical license number?
Dr. Tappan's California license number on file is A23884.
Is Dr. James Gregory Tappan board certified?
Yes. Dr. Tappan is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
What drugs does Dr. James Gregory Tappan prescribe most?
In 2017 Medicare Part D data, Dr. Tappan's most prescribed drugs by claims were Levothyroxine Sodium.
How long has Dr. James Gregory Tappan been practicing?
Dr. Tappan's NPI was assigned in 2005.
Does Dr. James Gregory Tappan do research?
Dmand AI links 1 publication to Dr. Tappan.
What insurance does Dr. James Gregory Tappan accept?
Dr. Tappan is in network with 11 carriers, including United Healthcare, Elevance and Aetna. PPO plans come from the most carriers, 7. Check the plan with the practice before a visit.
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