Dr. Marcus Chenchi Lien, MD
- Medicare services, 2022
- 172
- Industry payments
- $35
- Affiliated sites
- 1
- Medical group
- 1
- State license
- 1
- Practice address
- 34800 Bob Wilson Dr, San Diego, CA 92134
- Practice phone
- Call (619) 532-8441
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Naval Medical Center San Diego
San Diego, California
Find Dr. Lien'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. Marcus Chenchi Lien is a critical care medicine (internal medicine) physician in San Diego, California
Dr. Lien practices at Naval Medical Center San Diego in San Diego, California.
Dr. Lien's NPI, 1063439941, was assigned on July 16, 2006. Dr. Lien graduated from Pennsylvania State University College of Medicine in 2001. Dr. Lien holds New York license 306373.
- NPI
- 1063439941NPI Registry (opens in a new tab)
- NPI enumeration date
- July 16, 2006
- NPI status
- Active
- Practice phone
- (619) 532-8441
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 51
- Medical school graduation
- 2001
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. Marcus Chenchi Lien practices at Naval Medical Center San Diego in San Diego, California
Dr. Lien's primary practice is Naval Medical Center San Diego, at 34800 Bob Wilson Dr, San Diego, CA 92134 in San Diego County. The practice phone is (619) 532-8441.
- Naval Medical Center San Diego34800 Bob Wilson Dr, San Diego, CA 92134 · San Diego CountyPhone(619) 532-8441
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Marcus Chenchi Lien is affiliated with 2 sites of care and 1 medical group
Dr. Lien's primary practice is Naval Medical Center San Diego in San Diego, California. The medical group on file is NewYork-Presbyterian Medical Group Westchester. Dmand AI also links Dr. Lien 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. Marcus Chenchi Lien's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Lien practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Naval Medical Center San Diego | 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. Marcus Chenchi Lien is one of 666 critical care medicine (internal medicine) physicians in California
Critical care medicine is Dr. Lien's primary specialty in the NPI Registry, under taxonomy code 207RC0200X. Dr. Lien is licensed in New York.
Specialties and state licenses
- Critical care medicine (internal medicine), New YorkPrimary
Critical care medicine (internal medicine) physicians near Dr. Lien
Counts of critical care medicine (internal 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. Marcus Chenchi Lien billed Medicare for 172 services in 2022
CMS data shows 172 Medicare services from Dr. Lien across 3 procedure codes in 2022. Medicare paid $24,677 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Lien's Medicare services by type, 2021 to 2022
- 2021
- 2022
- Office and hospital visits
- 2021: 4712022: 17263%
Dr. Lien compared with the California median for critical care medicine (internal medicine) physicians, 2022
- Dr. Lien
- California median
- Medicare services
- 172vs 33048% below
Medians across 632 critical care medicine (internal medicine) physicians in California with Dmand AI profiles that report each measure.
Dr. Lien's most billed Medicare procedure codes, 2022
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. Lien and other critical care medicine (internal medicine) physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Marcus Chenchi Lien's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Dr. Lien's median patient age at 73, with 0% women.
Dr. Lien's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
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Dr. Marcus Chenchi Lien received $35 in industry payments from 2017 to 2018
CMS Open Payments shows 2 general payments to Dr. Lien from 1 drug or device company from 2017 to 2018. Food and beverage make up the largest share, 100% of the total. BTG International, Inc. paid the most, $35.
General payments to Dr. Lien by program year, 2017 to 2018
Companies that paid Dr. Lien the most, 2017 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Marcus Chenchi Lien graduated from Pennsylvania State University College of Medicine
Dr. Lien graduated from Pennsylvania State University College of Medicine in 2001.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Marcus Chenchi Lien'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 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 |
| 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. Marcus Chenchi Lien
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. Marcus Chenchi Lien's NPI number?
Dr. Marcus Chenchi Lien's NPI number is 1063439941. It was assigned on July 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Marcus Chenchi Lien?
Dr. Marcus Chenchi Lien is a critical care medicine (internal medicine) physician in San Diego, California. The primary specialty in the NPI Registry is Critical Care Medicine (Internal Medicine) Physician (taxonomy code 207RC0200X).
Where does Dr. Marcus Chenchi Lien practice?
Dr. Lien practices at 34800 Bob Wilson Dr, San Diego, CA 92134. Dr. Lien's primary practice is Naval Medical Center San Diego in San Diego, California. Dmand AI also links Dr. Lien to 1 group practice or clinic.
What is Dr. Marcus Chenchi Lien's office phone number?
The practice phone on file for Dr. Lien is (619) 532-8441.
What is Dr. Marcus Chenchi Lien's medical license number?
Dr. Lien holds New York license 306373.
What medical group is Dr. Marcus Chenchi Lien part of?
Dr. Lien is linked to NewYork-Presbyterian Medical Group Westchester.
Does Dr. Marcus Chenchi Lien accept Medicare?
Yes. CMS data shows Dr. Lien billed Medicare for 172 services in 2022.
What services does Dr. Marcus Chenchi Lien bill to Medicare?
In 2022, Dr. Lien's most billed Medicare services were hospital inpatient care (99233), critical care (99291) and hospital inpatient care (99223).
Where did Dr. Marcus Chenchi Lien go to medical school?
Dr. Lien graduated from Pennsylvania State University College of Medicine in 2001.
Has Dr. Marcus Chenchi Lien received payments from drug or device companies?
CMS Open Payments shows $35 in general payments to Dr. Lien from 1 company from 2017 to 2018. The largest total came from BTG International, Inc.
How long has Dr. Marcus Chenchi Lien been practicing?
Dr. Lien graduated from medical school in 2001, 25 years ago.
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