Dr. Mark M. Bai, MD
- Part D claims, 2024
- 5,311
- Hospital affiliations
- 1
- Medical group
- 1
- Insurance carriers
- 2
- State license
- 1
- Practice address
- 9961 Sierra Ave, Fontana, CA 92335
- Practice phone
- Call (909) 427-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Bai'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. Mark M. Bai is a family medicine physician in Fontana, California
Dr. Bai practices at Fontana Medical Center in Fontana, California, part of Kaiser Permanente.
Dr. Bai's NPI, 1336216217, was assigned on November 29, 2006. Dr. Bai graduated from Keck School of Medicine of USC in 2002. Dr. Bai's California license number on file is A84557.
- NPI
- 1336216217NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9335160639
- NPI enumeration date
- November 29, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (909) 427-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- 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. Mark M. Bai practices at Fontana Medical Center in Fontana, California
Dr. Bai's primary practice is Fontana Medical Center, at 9961 Sierra Ave, Fontana, CA 92335 in San Bernardino County. The practice phone is (909) 427-5000.
- Fontana Medical Center9961 Sierra Ave, Fontana, CA 92335 · San Bernardino CountyPhone(909) 427-5000
Source: Dmand AI Affiliation Data
Dr. Mark M. Bai is affiliated with 1 site of care and 1 medical group
Dr. Bai's primary practice is Fontana Medical Center in Fontana, California, part of Kaiser Permanente. The medical group on file is Southern California Permanente Medical Group.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark M. Bai's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Bai practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Fontana Medical Center | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Mark M. Bai is one of 15,680 family medicine physicians in California
Family medicine is Dr. Bai's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Bai is board certified in family medicine by the American Board of Family Medicine. Dr. Bai has a license on file in California.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
Family medicine physicians near Dr. Bai
Counts of family medicine 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. Mark M. Bai's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts Dr. Bai's median patient age at 58, with 63% women.
Dr. Bai'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
- Women63%
- Men36%
Source: Dmand AI Patient Panel Data
Dr. Mark M. Bai wrote 5,311 Medicare Part D claims in 2024
In 2024, Dr. Bai wrote 5,311 Medicare Part D claims for 1,416 patients. 89% of them were for generic drugs. CMS names the drug for 4,695 of them, across 82 drugs with 11 or more claims each, at $166,316 in total drug cost. In 2023, CMS named 1,679 claims across 46 drugs.
Dr. Bai's Part D claims by kind of drug, 2024
- Generic4,712 claims89%
- Brand-name495 claims9%
- Other104 claims2%
Dr. Bai'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. Bai's Part D claims, 2024
- Opioids2%80 of 5,311 claims
- Antibiotics3%149 of 5,311 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: 1,6792024: 4,695180%
Drugs named by CMS: 82 in 2024, 46 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. Mark M. Bai takes part in Medicare
Dr. Bai 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. Mark M. Bai has 3 awards and honors on record
Dmand AI lists 3 awards for Dr. Bai, most recently NCQA DRP in 2014.
Awards and honors for Dr. Bai
- 2014
- NCQA DRP
- 2012
- NCQA HSRP
- Undated
- Bridges to Excellence
Source: Dmand AI Professional Profile Data
Dr. Mark M. Bai graduated from Keck School of Medicine of USC
Dr. Bai graduated from Keck School of Medicine of USC in 2002.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. Mark M. Bai accepts plans from 2 insurance carriers
Dr. Bai is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Bai accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Mark M. Bai'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) |
| 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. Mark M. Bai
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. Mark M. Bai's NPI number?
Dr. Mark M. Bai's NPI number is 1336216217. It was assigned on November 29, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark M. Bai?
Dr. Mark M. Bai is a family medicine physician in Fontana, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. Mark M. Bai practice?
Dr. Bai practices at 9961 Sierra Ave, Fontana, CA 92335. Dr. Bai's primary practice is Fontana Medical Center in Fontana, California, part of Kaiser Permanente.
What is Dr. Mark M. Bai's office phone number?
The practice phone on file for Dr. Bai is (909) 427-5000.
What is Dr. Mark M. Bai's medical license number?
Dr. Bai's California license number on file is A84557.
Which hospitals is Dr. Mark M. Bai affiliated with?
Dr. Bai practices at Fontana Medical Center in Fontana, California.
What medical group is Dr. Mark M. Bai part of?
Dr. Bai is linked to Southern California Permanente Medical Group.
Does Dr. Mark M. Bai accept Medicare?
Yes. CMS lists Dr. Bai as accepting Medicare assignment.
Is Dr. Mark M. Bai board certified?
Yes. Dr. Bai is board certified in family medicine by the American Board of Family Medicine.
Where did Dr. Mark M. Bai go to medical school?
Dr. Bai graduated from Keck School of Medicine of USC in 2002.
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What drugs does Dr. Mark M. Bai prescribe most?
In 2024 Medicare Part D data, Dr. Bai's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Rosuvastatin Calcium.
How long has Dr. Mark M. Bai been practicing?
Dr. Bai graduated from medical school in 2002, 24 years ago.
What insurance does Dr. Mark M. Bai accept?
Dr. Bai is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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