Dr. Maria Rhodora Espinas Chan, MD
- Medicare patients, 2024
- 13
- Part D claims, 2024
- 6,096
- Hospital affiliations
- 1
- Industry payments
- $18
- Medical group
- 1
- Practice address
- 975 Sereno Dr, Vallejo, CA 94589
- Practice phone
- Call (707) 651-1000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Chan's professional email, personal email and mobile number
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Dr. Maria Rhodora Espinas Chan is an internist in Vallejo, California
Dr. Chan practices at Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente.
Dr. Chan's NPI, 1760770481, was assigned on July 14, 2011. Dr. Chan holds Indiana license 125059039.
- NPI
- 1760770481NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002970175
- NPI enumeration date
- July 14, 2011
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (707) 651-1000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 50
- Medical school graduation
- 2002
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Maria Rhodora Espinas Chan practices at Vallejo Medical Center in Vallejo, California
Dr. Chan's primary practice is Vallejo Medical Center, at 975 Sereno Dr, Vallejo, CA 94589 in Solano County. The practice phone is (707) 651-1000.
- Vallejo Medical Center975 Sereno Dr, Vallejo, CA 94589 · Solano CountyPhone(707) 651-1000
Source: Dmand AI Affiliation Data
Dr. Maria Rhodora Espinas Chan is affiliated with 3 sites of care and 1 medical group
Dr. Chan's primary practice is Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente. The medical group on file is The Permanente Medical Group, Inc. Dmand AI also links Dr. Chan to 1 more home health agency and 1 hospice, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Maria Rhodora Espinas Chan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Vallejo Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Maria Rhodora Espinas Chan is one of 16,751 internists in California
Internal medicine is Dr. Chan's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chan is licensed in Indiana.
Specialties and state licenses
- Internal medicine, IndianaPrimary
Internists near Dr. Chan
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. Maria Rhodora Espinas Chan treated 13 Medicare patients in 2024, average age 58
CMS counts 13 Medicare patients who saw Dr. Chan in 2024. The largest group is 75 to 84, with 0 patients. Their average risk score is 0.93, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chan's median patient age at 58, with 67% women.
Dr. Chan's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Chan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women67%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Maria Rhodora Espinas Chan wrote 6,096 Medicare Part D claims in 2024
In 2024, Dr. Chan wrote 6,096 Medicare Part D claims for 757 patients. 92% of them were for generic drugs. CMS names the drug for 5,562 of them, across 100 drugs with 11 or more claims each, at $176,545 in total drug cost. In 2023, CMS named 4,962 claims across 92 drugs.
Dr. Chan's Part D claims by kind of drug, 2024
- Generic5,587 claims92%
- Brand-name494 claims8%
- Other15 claims0%
Dr. Chan'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. Chan's Part D claims, 2024
- Opioids3%201 of 6,096 claims
- Antibiotics4%240 of 6,096 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: 4,9622024: 5,56212%
Drugs named by CMS: 100 in 2024, 92 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
Dr. Maria Rhodora Espinas Chan offers telehealth to Medicare patients
Dr. Chan accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Chan as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Maria Rhodora Espinas Chan received $18 in industry payments in 2016
CMS Open Payments shows 1 general payment to Dr. Chan from 1 drug or device company in 2016. Food and beverage make up the largest share, 100% of the total. Abbott Laboratories paid the most, $18.
Companies that paid Dr. Chan the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Maria Rhodora Espinas Chan'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 DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| 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. Maria Rhodora Espinas Chan
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. Maria Rhodora Espinas Chan's NPI number?
Dr. Maria Rhodora Espinas Chan's NPI number is 1760770481. It was assigned on July 14, 2011, and it is active in the NPI Registry.
What kind of doctor is Dr. Maria Rhodora Espinas Chan?
Dr. Maria Rhodora Espinas Chan is an internist in Vallejo, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Maria Rhodora Espinas Chan practice?
Dr. Chan practices at 975 Sereno Dr, Vallejo, CA 94589. Dr. Chan's primary practice is Vallejo Medical Center in Vallejo, California, part of Kaiser Permanente. Dmand AI also links Dr. Chan to 1 home health agency and 1 hospice.
What is Dr. Maria Rhodora Espinas Chan's office phone number?
The practice phone on file for Dr. Chan is (707) 651-1000.
What is Dr. Maria Rhodora Espinas Chan's medical license number?
Dr. Chan holds Indiana license 125059039.
Which hospitals is Dr. Maria Rhodora Espinas Chan affiliated with?
Dr. Chan practices at Vallejo Medical Center in Vallejo, California.
What medical group is Dr. Maria Rhodora Espinas Chan part of?
Dr. Chan is linked to The Permanente Medical Group, Inc.
Does Dr. Maria Rhodora Espinas Chan accept Medicare?
Yes. CMS lists Dr. Chan as accepting Medicare assignment.
Does Dr. Maria Rhodora Espinas Chan offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Chan as offering telehealth services.
How many Medicare patients does Dr. Maria Rhodora Espinas Chan see?
CMS counts 13 Medicare patients who saw Dr. Chan in 2024, with an average age of 58.
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What drugs does Dr. Maria Rhodora Espinas Chan prescribe most?
In 2024 Medicare Part D data, Dr. Chan's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.
Has Dr. Maria Rhodora Espinas Chan received payments from drug or device companies?
CMS Open Payments shows $18 in general payments to Dr. Chan from 1 company from 2016 to 2016. The largest total came from Abbott Laboratories.
How long has Dr. Maria Rhodora Espinas Chan been practicing?
Dr. Chan graduated from medical school in 2002, 24 years ago.
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