Dr. Fredrick Sungjae An, DO
- Medicare services, 2021
- 111
- Part D claims, 2020
- 11
- Hospital affiliations
- 2
- Medical groups
- 2
- State licenses
- 2
- Practice address
- 1717 South J Street, Tacoma, WA 98405
- Practice phone
- Call (253) 627-4101
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. An'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. Fredrick Sungjae An is an internist in Tacoma, Washington
Dr. An practices at St. Joseph Medical Center in Tacoma, Washington, part of CommonSpirit Health.
Dr. An's NPI, 1194991901, was assigned on May 1, 2008. Dr. An graduated from College of Osteo Med of the Pacific at Pomona in 2008. Dr. An holds Oregon license DO29350.
- NPI
- 1194991901NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5496926867
- NPI enumeration date
- May 1, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (253) 627-4101
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Fredrick Sungjae An practices at St. Joseph Medical Center in Tacoma, Washington
Dr. An's primary practice is St. Joseph Medical Center, at 1717 South J Street, Tacoma, WA 98405 in Pierce County. The practice phone is (253) 627-4101.
- St. Joseph Medical Center1717 South J Street, Tacoma, WA 98405 · Pierce CountyPhone(253) 627-4101
Source: Dmand AI Affiliation Data
Dr. Fredrick Sungjae An is affiliated with 2 sites of care and 2 medical groups
Dr. An's primary practice is St. Joseph Medical Center in Tacoma, Washington, part of CommonSpirit Health. Dr. An is also affiliated with Providence St. Peter Hospital. The medical group on file is Washington Permanente Medical Group, P.C. Dmand AI also links Dr. An to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Fredrick Sungjae An's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. An practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| St. Joseph Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Fredrick Sungjae An is one of 2,689 internists in Washington
Internal medicine is Dr. An's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dmand AI has Dr. An's licenses on file in 2 states: Oregon and Washington.
Specialties and state licenses
- Internal medicine, OregonPrimary
- Hospitalist, Washington
Internists near Dr. An
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. Fredrick Sungjae An billed Medicare for 111 services in 2021
CMS data shows 111 Medicare services from Dr. An across 3 procedure codes in 2021. Medicare paid $7,112 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. An's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 2392021: 11154%
Dr. An compared with the Washington median for internists, 2021
- Dr. An
- Washington median
- Medicare services
- 111vs 36470% below
- Part D claims
- 11vs 18294% below
Medians across 2,604 internists in Washington with Dmand AI profiles that report each measure.
Dr. An'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. An and other internists in Washington.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Fredrick Sungjae An's patients have a median age of 71
Across all payers, Dmand AI patient panel data puts Dr. An's median patient age at 71, with 50% women.
Dr. An's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 71
Patient panel by sex, all payers
- Women50%
- Men47%
Source: Dmand AI Patient Panel Data
Dr. Fredrick Sungjae An wrote 11 Medicare Part D claims in 2020
In 2020, Dr. An wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $73 in total drug cost. In 2019, CMS named 26 claims across 2 drugs.
Dr. An's most prescribed drugs by claims, 2020
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, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 262020: 1158%
Drugs named by CMS: 1 in 2020, 2 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Fredrick Sungjae An takes part in Medicare
Dr. An 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. Fredrick Sungjae An graduated from College of Osteo Med of the Pacific at Pomona
Dr. An graduated from College of Osteo Med of the Pacific at Pomona in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Fredrick Sungjae An'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 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) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (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. Fredrick Sungjae An
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. Fredrick Sungjae An's NPI number?
Dr. Fredrick Sungjae An's NPI number is 1194991901. It was assigned on May 1, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Fredrick Sungjae An?
Dr. Fredrick Sungjae An is an internist in Tacoma, Washington. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Fredrick Sungjae An practice?
Dr. An practices at 1717 South J Street, Tacoma, WA 98405. Dr. An's primary practice is St. Joseph Medical Center in Tacoma, Washington, part of CommonSpirit Health. Dmand AI also links Dr. An to 1 medical group.
What is Dr. Fredrick Sungjae An's office phone number?
The practice phone on file for Dr. An is (253) 627-4101.
What is Dr. Fredrick Sungjae An's medical license number?
Dr. An holds Oregon license DO29350, one of the licenses on file in 2 states.
Which states has Dr. Fredrick Sungjae An been licensed in?
Dmand AI has state licenses on file for Dr. An in Oregon and Washington.
Which hospitals is Dr. Fredrick Sungjae An affiliated with?
Dr. An practices at St. Joseph Medical Center in Tacoma, Washington. Dr. An is also affiliated with Providence St. Peter Hospital.
What medical group is Dr. Fredrick Sungjae An part of?
Dr. An is linked to Washington Permanente Medical Group, P.C. Dmand AI links Dr. An to 1 more medical group.
Does Dr. Fredrick Sungjae An accept Medicare?
Yes. CMS data shows Dr. An billed Medicare for 111 services in 2021, and Dr. An accepts Medicare assignment.
What services does Dr. Fredrick Sungjae An bill to Medicare?
In 2021, Dr. An's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
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Where did Dr. Fredrick Sungjae An go to medical school?
Dr. An graduated from College of Osteo Med of the Pacific at Pomona in 2008.
What drugs does Dr. Fredrick Sungjae An prescribe most?
In 2020 Medicare Part D data, Dr. An's most prescribed drugs by claims were Oxycodone HCl.
How long has Dr. Fredrick Sungjae An been practicing?
Dr. An graduated from medical school in 2008, 18 years ago.
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