Dr. Marvin L. Tan, MD
- Part D claims, 2024
- 14
- Industry payments
- $208
- Affiliated sites
- 3
- Medical group
- 1
- Insurance carriers
- 5
- Practice address
- 9400 Rosecrans Avenue, Bellflower, CA 90706
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD
Acute Care Hospital outpatient department · Bellflower, California
Find Dr. Tan'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. Marvin L. Tan is a developmental - behavioral pediatrics physician in Bellflower, California
Dr. Tan practices at Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD in Bellflower, California.
Dr. Tan's NPI, 1942377817, was assigned on November 29, 2006. Dr. Tan graduated from UC Irvine School of Medicine in 1990. Dr. Tan's California license number on file is G74523.
- NPI
- 1942377817NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2860672797
- NPI enumeration date
- November 29, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1990
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Marvin L. Tan practices at Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD in Bellflower, California
Dr. Tan's primary practice is Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD, at 9400 Rosecrans Avenue, Bellflower, CA 90706.
- Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD9400 Rosecrans Avenue, Bellflower, CA 90706
Source: Dmand AI Affiliation Data
Dr. Marvin L. Tan is affiliated with 3 sites of care and 1 medical group
Dr. Tan's primary practice is Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD in Bellflower, California. The medical group on file is Southern California Permanente Medical Group. Dmand AI also links Dr. Tan to 1 more breast imaging center and 1 group practice or clinic, each named with a free account. Dr. Tan's employer is on file too: a hospital.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Marvin L. Tan's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Tan practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Marvin L. Tan is one of 128 developmental - behavioral pediatrics physicians in California
Developmental - behavioral pediatrics is Dr. Tan's primary specialty in the NPI Registry, under taxonomy code 2080P0006X. Dr. Tan is board certified in pediatrics by the American Board of Pediatrics. Dr. Tan has a license on file in California.
Specialties and state licenses
- Developmental - behavioral pediatrics, CaliforniaPrimary
Developmental - behavioral pediatrics physicians near Dr. Tan
Counts of developmental - behavioral pediatrics 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. Marvin L. Tan's patients have a median age of 8
Across all payers, Dmand AI patient panel data puts Dr. Tan's median patient age at 8, with 25% women.
Dr. Tan's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 8
Patient panel by sex, all payers
- Women25%
- Men75%
Source: Dmand AI Patient Panel Data
Dr. Marvin L. Tan wrote 14 Medicare Part D claims in 2024
In 2024, Dr. Tan wrote 14 Medicare Part D claims. 100% of them were for generic drugs. CMS names the drug for 13 of them, across 1 drug with 11 or more claims each, at $693 in total drug cost. In 2022, CMS named 12 claims across 1 drug.
Dr. Tan'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.
Part D claims for drugs CMS names, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 122024: 138%
Drugs named by CMS: 1 in 2024, 1 in 2022.
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. Marvin L. Tan takes part in Medicare
Dr. Tan 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)
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Marvin L. Tan received $208 in industry payments in 2025
CMS Open Payments shows 3 general payments to Dr. Tan from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. ACADIA Pharmaceuticals Inc paid the most, $208.
Companies that paid Dr. Tan the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marvin L. Tan graduated from UC Irvine School of Medicine
Dr. Tan graduated from UC Irvine School of Medicine in 1990.
- Medical school
- Board certified in pediatrics
Source: Dmand AI Professional Profile Data
Dr. Marvin L. Tan accepts plans from 5 insurance carriers
Dr. Tan is in network with 5 carriers, including Elevance, Kaiser Permanente and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
- Elevance
- Kaiser Permanente
- Blue Cross Blue Shield of Massachusetts
- Blue Cross Blue Shield of Michigan
- HCSC
Plan types Dr. Tan accepts, by number of carriers
- Medicare4
- PPO4
- EPO2
- HMO2
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Marvin L. Tan'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 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) |
| 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. Marvin L. Tan
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. Marvin L. Tan's NPI number?
Dr. Marvin L. Tan's NPI number is 1942377817. It was assigned on November 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marvin L. Tan?
Dr. Marvin L. Tan is a developmental - behavioral pediatrics physician in Bellflower, California. The primary specialty in the NPI Registry is Developmental - Behavioral Pediatrics Physician (taxonomy code 2080P0006X).
Where does Dr. Marvin L. Tan practice?
Dr. Tan practices at 9400 Rosecrans Avenue, Bellflower, CA 90706. Dr. Tan's primary practice is Kaiser Permanente Medical Group Bellflower Medical Offices - HOPD in Bellflower, California. Dmand AI also links Dr. Tan to 1 breast imaging center and 1 group practice or clinic.
What is Dr. Marvin L. Tan's medical license number?
Dr. Tan's California license number on file is G74523.
What medical group is Dr. Marvin L. Tan part of?
Dr. Tan is linked to Southern California Permanente Medical Group.
Does Dr. Marvin L. Tan accept Medicare?
Yes. CMS lists Dr. Tan as accepting Medicare assignment.
Is Dr. Marvin L. Tan board certified?
Yes. Dr. Tan is board certified in pediatrics by the American Board of Pediatrics.
Where did Dr. Marvin L. Tan go to medical school?
Dr. Tan graduated from UC Irvine School of Medicine in 1990.
What drugs does Dr. Marvin L. Tan prescribe most?
In 2024 Medicare Part D data, Dr. Tan's most prescribed drugs by claims were Methylphenidate ER.
Has Dr. Marvin L. Tan received payments from drug or device companies?
CMS Open Payments shows $208 in general payments to Dr. Tan from 1 company from 2025 to 2025. The largest total came from ACADIA Pharmaceuticals Inc.
How long has Dr. Marvin L. Tan been practicing?
Dr. Tan graduated from medical school in 1990, 36 years ago.
What insurance does Dr. Marvin L. Tan accept?
Dr. Tan is in network with 5 carriers, including Elevance, Kaiser Permanente and Blue Cross Blue Shield of Massachusetts. Medicare plans come from the most carriers, 4. Check the plan with the practice before a visit.
Selling to developmental - behavioral pediatrics practices?
See developmental - behavioral pediatrics physicians in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card