Dr. Mark M. Applefeld, MD
- Medicare services, 2021
- 2,498
- Part D claims, 2022
- 625
- Hospital affiliations
- 1
- Industry payments
- $8,799
- Medical group
- 1
- Practice address
- 820 N Diamond Bar Blvd, Diamond Bar, CA 91765
- Practice phone
- Call (626) 322-2777
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Angeles Del Sol ADHC, LLC
Diamond Bar, California
Find Dr. Applefeld'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. Applefeld is a cardiologist in Diamond Bar, California
Dr. Applefeld practices at Angeles Del Sol ADHC, LLC in Diamond Bar, California.
Dr. Applefeld's NPI, 1124060215, was assigned on June 12, 2006. Dr. Applefeld graduated from University of Maryland School of Medicine in 1969. Dr. Applefeld holds Maryland license D0002512.
- NPI
- 1124060215NPI Registry (opens in a new tab)
- NPI enumeration date
- June 12, 2006
- NPI status
- Active
- Practice phone
- (626) 322-2777
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 83
- Medical school graduation
- 1969
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Mark M. Applefeld practices at Angeles Del Sol ADHC, LLC in Diamond Bar, California
Dr. Applefeld's primary practice is Angeles Del Sol ADHC, LLC, at 820 N Diamond Bar Blvd, Diamond Bar, CA 91765 in Los Angeles County. The practice phone is (626) 322-2777.
- Angeles Del Sol ADHC, LLC820 N Diamond Bar Blvd, Diamond Bar, CA 91765 · Los Angeles CountyPhone(626) 322-2777
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Mark M. Applefeld is affiliated with 2 sites of care and 1 medical group
Dr. Applefeld's primary practice is Angeles Del Sol ADHC, LLC in Diamond Bar, California. Dr. Applefeld is also affiliated with Mercy Medical Center. The medical group on file is Mercy Personal Physicians Downtown.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Mark M. Applefeld's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Applefeld practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Angeles Del Sol ADHC, LLC | 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. Mark M. Applefeld is one of 2,375 cardiologists in California
Cardiovascular disease is Dr. Applefeld's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dr. Applefeld is licensed in Maryland.
Specialties and state licenses
- Cardiovascular disease, MarylandPrimary
Cardiologists near Dr. Applefeld
Counts of cardiologists 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. Applefeld billed Medicare for 2,498 services in 2021
CMS data shows 2,498 Medicare services from Dr. Applefeld across 9 procedure codes in 2021. Medicare paid $66,451 for them.
Dr. Applefeld's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Tests and treatments
- 2020: 1,8762021: 1,7924%
- Office and hospital visits
- 2020: 8212021: 70614%
Where Dr. Applefeld's Medicare services took place, 2021
- In an office884%
- In a facility2,41096%
Dr. Applefeld compared with the California median for cardiologists, 2021
- Dr. Applefeld
- California median
- Medicare services
- 2,498vs 1,56060% above
- Part D claims
- 625vs 1,41056% below
Medians across 2,237 cardiologists in California with Dmand AI profiles that report each measure.
Dr. Applefeld's most billed Medicare procedure codes, 2021
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Applefeld and other cardiologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Mark M. Applefeld's patients have a median age of 69
Across all payers, Dmand AI patient panel data puts Dr. Applefeld's median patient age at 69, with 29% women.
Dr. Applefeld's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women29%
- Men71%
Source: Dmand AI Patient Panel Data
Dr. Mark M. Applefeld wrote 625 Medicare Part D claims in 2022
In 2022, Dr. Applefeld wrote 625 Medicare Part D claims. They cover 19 drugs, with $67,626 in total drug cost. In 2021, CMS named 3,105 claims across 48 drugs.
Dr. Applefeld's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 3,1052022: 62580%
Drugs named by CMS: 19 in 2022, 48 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Dr. Mark M. Applefeld received $8,799 in industry payments from 2016 to 2025
CMS Open Payments shows 477 general payments to Dr. Applefeld from 34 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 97% of the total. Novartis Pharmaceuticals Corporation paid the most, $1,441.
General payments to Dr. Applefeld by program year, 2016 to 2025
General payments to Dr. Applefeld by kind, 2016 to 2025
- Food and beverage$8,49497%
- Education$2793%
- Consulting fees$260%
Companies that paid Dr. Applefeld the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Mark M. Applefeld graduated from University of Maryland School of Medicine
Dr. Applefeld graduated from University of Maryland School of Medicine in 1969.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Mark M. Applefeld'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 DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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. Applefeld
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. Applefeld's NPI number?
Dr. Mark M. Applefeld's NPI number is 1124060215. It was assigned on June 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Mark M. Applefeld?
Dr. Mark M. Applefeld is a cardiologist in Diamond Bar, California. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Mark M. Applefeld practice?
Dr. Applefeld practices at 820 N Diamond Bar Blvd, Diamond Bar, CA 91765. Dr. Applefeld's primary practice is Angeles Del Sol ADHC, LLC in Diamond Bar, California.
What is Dr. Mark M. Applefeld's office phone number?
The practice phone on file for Dr. Applefeld is (626) 322-2777.
What is Dr. Mark M. Applefeld's medical license number?
Dr. Applefeld holds Maryland license D0002512.
Which hospitals is Dr. Mark M. Applefeld affiliated with?
Dr. Applefeld is affiliated with Mercy Medical Center.
What medical group is Dr. Mark M. Applefeld part of?
Dr. Applefeld is linked to Mercy Personal Physicians Downtown.
Does Dr. Mark M. Applefeld accept Medicare?
Yes. CMS data shows Dr. Applefeld billed Medicare for 2,498 services in 2021.
What services does Dr. Mark M. Applefeld bill to Medicare?
In 2021, Dr. Applefeld's most billed Medicare services were heart test or procedure (93010), office visit, established patient (99214) and heart test or procedure (93016).
Where did Dr. Mark M. Applefeld go to medical school?
Dr. Applefeld graduated from University of Maryland School of Medicine in 1969.
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What drugs does Dr. Mark M. Applefeld prescribe most?
In 2022 Medicare Part D data, Dr. Applefeld's most prescribed drugs by claims were Rosuvastatin Calcium, Metoprolol Succinate and Atorvastatin Calcium.
Has Dr. Mark M. Applefeld received payments from drug or device companies?
CMS Open Payments shows $8,799 in general payments to Dr. Applefeld from 34 companies from 2016 to 2025. The largest total came from Novartis Pharmaceuticals Corporation.
How long has Dr. Mark M. Applefeld been practicing?
Dr. Applefeld graduated from medical school in 1969, 57 years ago.
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