Dr. Anna L. Chien, MD

  • Columbia, MD
  • Dermatologist
NPI1538286059PAC ID0345396305
Medicare services, 2024
1,268
Medicare patients, 2024
451
Part D claims, 2024
272
Publications
57
Clinical trials
5
Practice address
10710 Charter Dr, Columbia, MD 21044
Practice phone
Call (410) 772-7345
Professional email
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Personal email
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Mobile number
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Social profiles

Primary practice

Howard County Gastrointestinal Diagnostic Center

Columbia, Maryland

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Dr. Anna L. Chien is a dermatologist in Columbia, Maryland

Dr. Chien practices at Howard County Gastrointestinal Diagnostic Center in Columbia, Maryland.

Dr. Chien's NPI, 1538286059, was assigned on March 22, 2007. Dr. Chien graduated from Pritzker School of Medicine in 2005. Dr. Chien holds Maryland license D69392.

NPI and contact details
Medicare PAC ID
0345396305
NPI enumeration date
March 22, 2007
NPI status
Active
Practice phone
(410) 772-7345
Professional email
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Personal email
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Mobile number
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Sex
Female
Estimated age
47
Medical school graduation
2005

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data

Dr. Anna L. Chien practices at Howard County Gastrointestinal Diagnostic Center in Columbia, Maryland

Dr. Chien's primary practice is Howard County Gastrointestinal Diagnostic Center, at 10710 Charter Dr, Columbia, MD 21044 in Howard County. The practice phone is (410) 772-7345.

  • Howard County Gastrointestinal Diagnostic Center
    10710 Charter Dr, Columbia, MD 21044 · Howard CountyPhone(410) 772-7345

Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data

Dr. Anna L. Chien is affiliated with 2 sites of care and 1 medical group

Dr. Chien's primary practice is Howard County Gastrointestinal Diagnostic Center in Columbia, Maryland. Dr. Chien is also affiliated with The Johns Hopkins Hospital. The medical group on file is Johns Hopkins University.

See all 3 affiliations for Dr. Chien

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. Anna L. Chien's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chien practices. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Howard County Gastrointestinal Diagnostic CenterAvailable with a free account
+1 more affiliated siteAvailable with a free account

Source: Dmand AI Technology Install Data

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Dr. Anna L. Chien is one of 270 dermatologists in Maryland

Dermatology is Dr. Chien's primary specialty in the NPI Registry, under taxonomy code 207N00000X. Dr. Chien is board certified in dermatology by the American Board of Dermatology. Dmand AI has Dr. Chien's licenses on file in 2 states: Maryland and Michigan.

Specialties and state licenses

  • Dermatology, MarylandPrimaryLicense D69392 · 2009 to 2026 · taxonomy 207N00000X
  • Michigan license2005 to 2009

Clinical focus

Dmand AI lists acne, benign or precancerous skin growths, contact dermatitis, itchy rashes, psoriasis, rash, scalp rash and skin cyst among the conditions Dr. Chien treats.

Dermatologists near Dr. Chien

Counts of dermatologists 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. Anna L. Chien billed Medicare for 1,268 services in 2024

CMS data shows 1,268 Medicare services from Dr. Chien across 8 procedure codes in 2024, for 451 Medicare patients. Medicare paid $60,693 for them.

Medicare services, 20241,268
Medicare patients451
Paid by Medicare$60,693
Procedure codes8

Dr. Chien's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Surgery
2023: 7682024: 7236%
Office and hospital visits
2023: 5232024: 5454%

Where Dr. Chien's Medicare services took place, 2024

  • In an office1,15191%
  • In a facility1179%

Dr. Chien compared with the Maryland median for dermatologists, 2024

  • Dr. Chien
  • Maryland median
Medicare services
1,268vs 1,74827% below
Medicare patients
451vs 4888% below
Part D claims
123vs 35565% below

Medians across 249 dermatologists in Maryland with Dmand AI profiles that report each measure.

Dr. Chien's most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Dr. Chien

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Anna L. Chien treated 451 Medicare patients in 2024, average age 73

CMS counts 451 Medicare patients who saw Dr. Chien in 2024. The largest group is 65 to 74, with 210 patients. 75% of them have high cholesterol, and 69% have high blood pressure. 12% are also on Medicaid. Their average risk score is 1.11, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Chien's median patient age at 66, with 56% women.

Medicare patients, 2024451
Average age73
Average risk score1.11
Also on Medicaid12%

Dr. Chien's Medicare patients by age, 2024

Dr. Chien's Medicare patients by sex, 2024

  • Women25857%
  • Men19343%

Chronic conditions among Dr. Chien's Medicare patients, 2024

  1. High cholesterol75%
  2. High blood pressure69%
  3. Arthritis52%
  4. Diabetes25%
  5. Ischemic heart disease24%
  6. Osteoporosis22%
  7. Mood disorders21%
  8. Anxiety20%

Share of Medicare patients with each condition. A patient can have several.

Dr. Chien's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 66

Patient panel by sex, all payers

  • Women56%
  • Men44%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Anna L. Chien wrote 272 Medicare Part D claims in 2024

In 2024, Dr. Chien wrote 272 Medicare Part D claims for 95 patients. 71% of them were for generic drugs. CMS names the drug for 123 of them, across 6 drugs with 11 or more claims each, at $143,662 in total drug cost. In 2023, CMS named 96 claims across 5 drugs.

Part D claims, 2024272
Drugs named by CMS6
Total drug cost$143,662
Part D patients95

Dr. Chien's Part D claims by kind of drug, 2024

  • Generic192 claims71%
  • Brand-name80 claims29%

Dr. Chien'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. Chien's Part D claims, 2024

  • Antibiotics4%11 of 272 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: 962024: 12328%

Drugs named by CMS: 6 in 2024, 5 in 2023.

See all prescribing by Dr. Chien

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

Dr. Anna L. Chien scored 83 out of 100 in Medicare's MIPS program for 2024

CMS publishes a Merit-based Incentive Payment System (MIPS) score of 83 out of 100 for Dr. Chien for performance year 2024, reported as part of a group. CMS counts 307 procedures of removal of skin lesions by Dr. Chien, more than 82% of the clinicians it reports for that procedure.

Dr. Chien's MIPS scores, performance year 2024

  • 83of 100Final score
  • 73.9of 100Quality
  • 100of 100Promoting Interoperability
  • 40of 100Improvement Activities
  • 70of 100Cost

Each score is out of 100. The final score weighs the categories CMS scored for this clinician.

Where Dr. Chien ranks in Medicare procedure volume

Removal of skin lesions
82nd percentile307 procedures
Skin biopsy
75th percentile93 procedures

CMS ranks each clinician against every clinician it reports for the same procedure category.

Removal or shaving of skin growth: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)

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Dr. Anna L. Chien has 57 publications on record

Dmand AI links 57 papers to Dr. Chien, published from 2014 to 2025. 2020 was the busiest year, with 8. The most frequent topics are Skin, Skin Aging and Rosacea. Dr. Chien has published most often in J Am Acad Dermatol. Dr. Chien's most frequent co-authors are Luis Angel Garza, MD, Jean Hee Suh, MD and Hilary E. Baldwin, MD.

Papers57
Years published2014 to 2025

Dr. Chien's papers by year, 2016 to 2025

Topics Dr. Chien writes about most

  • Skin
  • Skin Aging
  • Rosacea
  • Ultraviolet Rays
  • Acne Vulgaris
  • Skin Neoplasms
  • Microbiota
  • Skin Pigmentation

Dr. Chien's most frequent co-authors

Recent publications by Dr. Chien

See all 57 publications and co-authors

See who Dr. Chien researches with

Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Chien works with, so you can find a warm path to the right dermatologists.

How network discovery works

Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage

Dr. Anna L. Chien has worked on 5 clinical trials

Dmand AI links Dr. Chien to 5 clinical trials, 2 of them early phase 1 studies. 2 are still active or recruiting. Conditions studied include Drug-Related Side Effects and Adverse Reactions, Pruritus and Rosacea. Johns Hopkins University sponsors the most, 5.

Conditions in Dr. Chien's trials

  • Drug-Related Side Effects and Adverse Reactions
  • Pruritus
  • Rosacea
  • Chemically-Induced Disorders
  • Skin Diseases

Recent clinical trials with Dr. Chien

Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)

Dr. Anna L. Chien received $8,542 in industry payments from 2016 to 2021

CMS Open Payments shows 16 general payments to Dr. Chien from 2 drug and device companies from 2016 to 2021. Consulting fees make up the largest share, 88% of the total. Galderma Laboratories, L.P. paid the most, $7,592.

General payments to Dr. Chien by program year, 2016 to 2021

General payments to Dr. Chien by kind, 2016 to 2021

$8.5Kin total
  • Consulting fees$7,52588%
  • Travel and lodging$7108%
  • Food and beverage$3074%

Companies that paid Dr. Chien the most, 2016 to 2021

Share is of all general payments to this clinician.

See all payments to Dr. Chien

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Dr. Anna L. Chien has 1 award and honors on record

Dmand AI lists 1 award for Dr. Chien, most recently CMS Stage 1 EHR in 2014.

Awards and honors for Dr. Chien

  1. 2014
    • CMS Stage 1 EHR

Source: Dmand AI Professional Profile Data

Dr. Anna L. Chien graduated from Pritzker School of Medicine

Dr. Chien graduated from Pritzker School of Medicine in 2005.

  1. Medical schoolPritzker School of Medicine
  2. Board certified in dermatologyAmerican Board of Dermatology

Source: Dmand AI Professional Profile Data

Dr. Anna L. Chien accepts plans from 8 insurance carriers

Dr. Chien is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 5. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • CareFirst BlueCross BlueShield
  • Blue Cross and Blue Shield of Kansas City
  • CMS Medicare
  • DE State Medicaid

Plan types Dr. Chien accepts, by number of carriers

  1. HMO5
  2. Medicare4
  3. POS4
  4. PPO4
  5. EPO3
  6. Medicaid1

Source: Dmand AI Insurance Network Data

Sources for Dr. Anna L. Chien's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data
Primary practice, affiliations and health systemNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesClinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Publications, topics and co-authorsPubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage
Clinical trials and co-investigatorsDmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
Awards and committee rolesDmand AI Professional Profile Data
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Anna L. Chien

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. Anna L. Chien's NPI number?

Dr. Anna L. Chien's NPI number is 1538286059. It was assigned on March 22, 2007, and it is active in the NPI Registry.

What kind of doctor is Dr. Anna L. Chien?

Dr. Anna L. Chien is a dermatologist in Columbia, Maryland. The primary specialty in the NPI Registry is Dermatology Physician (taxonomy code 207N00000X).

Where does Dr. Anna L. Chien practice?

Dr. Chien practices at 10710 Charter Dr, Columbia, MD 21044. Dr. Chien's primary practice is Howard County Gastrointestinal Diagnostic Center in Columbia, Maryland.

What is Dr. Anna L. Chien's office phone number?

The practice phone on file for Dr. Chien is (410) 772-7345.

What is Dr. Anna L. Chien's medical license number?

Dr. Chien holds Maryland license D69392, one of the licenses on file in 2 states.

Which states has Dr. Anna L. Chien been licensed in?

Dmand AI has state licenses on file for Dr. Chien in Maryland (2009 to 2026) and Michigan (2005 to 2009).

Which hospitals is Dr. Anna L. Chien affiliated with?

Dr. Chien is affiliated with The Johns Hopkins Hospital.

What medical group is Dr. Anna L. Chien part of?

Dr. Chien is linked to Johns Hopkins University.

Does Dr. Anna L. Chien accept Medicare?

Yes. CMS data shows Dr. Chien billed Medicare for 1,268 services in 2024.

What is Dr. Anna L. Chien's MIPS score?

Dr. Chien's MIPS final score for performance year 2024 is 83 out of 100, reported as part of a group.

Show 10 more questionsShow fewer questions

How many Medicare patients does Dr. Anna L. Chien see?

CMS counts 451 Medicare patients who saw Dr. Chien in 2024, with an average age of 73.

Is Dr. Anna L. Chien board certified?

Yes. Dr. Chien is board certified in dermatology by the American Board of Dermatology.

What services does Dr. Anna L. Chien bill to Medicare?

In 2024, Dr. Chien's most billed Medicare services were surgery: skin and soft tissue (17003), office visit, established patient (99213) and office visit, established patient (99214).

Where did Dr. Anna L. Chien go to medical school?

Dr. Chien graduated from Pritzker School of Medicine in 2005.

What drugs does Dr. Anna L. Chien prescribe most?

In 2024 Medicare Part D data, Dr. Chien's most prescribed drugs by claims were Dupixent Pen, Ketoconazole and Triamcinolone Acetonide.

Has Dr. Anna L. Chien received payments from drug or device companies?

CMS Open Payments shows $8,542 in general payments to Dr. Chien from 2 companies from 2016 to 2021. The largest total came from Galderma Laboratories, L.P.

How long has Dr. Anna L. Chien been practicing?

Dr. Chien graduated from medical school in 2005, 21 years ago.

Does Dr. Anna L. Chien do research?

Dmand AI links 57 publications to Dr. Chien, published from 2014 to 2025. Dr. Chien has worked on 5 clinical trials.

Who does Dr. Anna L. Chien publish with?

Dr. Chien's most frequent co-authors are Luis Angel Garza, MD (5 shared papers), Jean Hee Suh, MD (3 shared papers) and Hilary E. Baldwin, MD (2 shared papers).

What insurance does Dr. Anna L. Chien accept?

Dr. Chien is in network with 8 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. HMO plans come from the most carriers, 5. Check the plan with the practice before a visit.

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