Dr. Mary Ann S. Tancuan, MD
- Part D claims, 2024
- 3,470
- Affiliated sites
- 1
- Medical group
- 1
- Insurance carriers
- 1
- State licenses
- 2
- Practice address
- 901 Nevin Ave, Richmond, CA 94801
- Practice phone
- Call (510) 307-1555
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Richmond Medical Center
Richmond, California
Find Dr. Tancuan'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. Mary Ann S. Tancuan is an internist in Richmond, California
Dr. Tancuan practices at Richmond Medical Center in Richmond, California.
Dr. Tancuan's NPI, 1154409647, was assigned on November 1, 2006. Dr. Tancuan graduated from University of Santo Tomas in 2001. Dr. Tancuan holds California license A95808.
- NPI
- 1154409647NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6608877055
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (510) 307-1555
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Mary Ann S. Tancuan practices at Richmond Medical Center in Richmond, California
Dr. Tancuan's primary practice is Richmond Medical Center, at 901 Nevin Ave, Richmond, CA 94801 in Contra Costa County. The practice phone is (510) 307-1555.
- Richmond Medical Center901 Nevin Ave, Richmond, CA 94801 · Contra Costa CountyPhone(510) 307-1555
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mary Ann S. Tancuan is affiliated with 2 sites of care and 1 medical group
Dr. Tancuan's primary practice is Richmond Medical Center in Richmond, California. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Tancuan to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Mary Ann S. Tancuan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tancuan practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Richmond Medical Center | 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. Mary Ann S. Tancuan is one of 16,751 internists in California
Internal medicine is Dr. Tancuan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Tancuan is board certified in family medicine by the American Board of Family Medicine. Dmand AI has Dr. Tancuan's licenses on file in 2 states: California and Michigan.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
- Michigan license
Clinical focus
Dmand AI lists intellectual and developmental disabilities among the conditions Dr. Tancuan treats.
Internists near Dr. Tancuan
Counts of internists 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. Mary Ann S. Tancuan's patients have a median age of 56
Across all payers, Dmand AI patient panel data puts Dr. Tancuan's median patient age at 56, with 65% women.
Dr. Tancuan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 56
Patient panel by sex, all payers
- Women65%
- Men34%
Source: Dmand AI Patient Panel Data
Dr. Mary Ann S. Tancuan wrote 3,470 Medicare Part D claims in 2024
In 2024, Dr. Tancuan wrote 3,470 Medicare Part D claims for 426 patients. 92% of them were for generic drugs. CMS names the drug for 2,890 of them, across 75 drugs with 11 or more claims each, at $91,116 in total drug cost. In 2023, CMS named 2,963 claims across 74 drugs.
Dr. Tancuan's Part D claims by kind of drug, 2024
- Generic3,185 claims92%
- Brand-name256 claims7%
- Other29 claims1%
Dr. Tancuan'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. Tancuan's Part D claims, 2024
- Opioids6%197 of 3,470 claims
- Antibiotics3%106 of 3,470 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: 2,9632024: 2,8902%
Drugs named by CMS: 75 in 2024, 74 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
How Dr. Mary Ann S. Tancuan takes part in Medicare
Dr. Tancuan accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Mary Ann S. Tancuan has 1 award and honors on record
Dmand AI lists 1 award for Dr. Tancuan, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Tancuan
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Mary Ann S. Tancuan graduated from University of Santo Tomas
Dr. Tancuan graduated from University of Santo Tomas in 2001.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Mary Ann S. Tancuan accepts plans from 1 insurance carrier
Dr. Tancuan is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
Plan types Dr. Tancuan accepts, by number of carriers
- EPO1
- HMO1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mary Ann S. Tancuan'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 |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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. Mary Ann S. Tancuan
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. Mary Ann S. Tancuan's NPI number?
Dr. Mary Ann S. Tancuan's NPI number is 1154409647. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mary Ann S. Tancuan?
Dr. Mary Ann S. Tancuan is an internist in Richmond, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Mary Ann S. Tancuan practice?
Dr. Tancuan practices at 901 Nevin Ave, Richmond, CA 94801. Dr. Tancuan's primary practice is Richmond Medical Center in Richmond, California. Dmand AI also links Dr. Tancuan to 1 group practice or clinic.
What is Dr. Mary Ann S. Tancuan's office phone number?
The practice phone on file for Dr. Tancuan is (510) 307-1555.
What is Dr. Mary Ann S. Tancuan's medical license number?
Dr. Tancuan holds California license A95808, one of the licenses on file in 2 states.
Which states has Dr. Mary Ann S. Tancuan been licensed in?
Dmand AI has state licenses on file for Dr. Tancuan in California (2006 to 2026) and Michigan (2003 to 2006).
What medical group is Dr. Mary Ann S. Tancuan part of?
Dr. Tancuan is linked to The Permanente Medical Group, Inc.
Does Dr. Mary Ann S. Tancuan accept Medicare?
Yes. CMS lists Dr. Tancuan as accepting Medicare assignment.
Is Dr. Mary Ann S. Tancuan board certified?
Yes. Dr. Tancuan is board certified in family medicine by the American Board of Family Medicine.
Where did Dr. Mary Ann S. Tancuan go to medical school?
Dr. Tancuan graduated from University of Santo Tomas in 2001.
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What drugs does Dr. Mary Ann S. Tancuan prescribe most?
In 2024 Medicare Part D data, Dr. Tancuan's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.
How long has Dr. Mary Ann S. Tancuan been practicing?
Dr. Tancuan graduated from medical school in 2001, 25 years ago.
What insurance does Dr. Mary Ann S. Tancuan accept?
Dr. Tancuan is in network with 1 carrier, including Kaiser Permanente. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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