Dr. Ik Jo Ahn, MD
- Medicare services, 2024
- 182
- Medicare patients, 2024
- 175
- Hospital affiliations
- 1
- Industry payments
- $224
- Medical group
- 1
- Practice address
- 345 St Paul Pl, Baltimore, MD 21202
- Practice phone
- Call (410) 663-8100
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Mercy Medical Center
Baltimore, Maryland
Find Dr. Ahn'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. Ik Jo Ahn is an anesthesiologist in Baltimore, Maryland
Dr. Ahn practices at Mercy Medical Center in Baltimore, Maryland.
Dr. Ahn's NPI, 1215917893, was assigned on January 19, 2006. Dr. Ahn graduated from George Washington University School of Medicine in 1999. Dr. Ahn holds Maryland license D0056642.
- NPI
- 1215917893NPI Registry (opens in a new tab)
- Medicare PAC ID
- 9739244229
- NPI enumeration date
- January 19, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (410) 663-8100
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ik Jo Ahn practices at Mercy Medical Center in Baltimore, Maryland
Dr. Ahn's primary practice is Mercy Medical Center, at 345 St Paul Pl, Baltimore, MD 21202 in Baltimore City. The practice phone is (410) 663-8100.
- Mercy Medical Center345 St Paul Pl, Baltimore, MD 21202 · Baltimore CityPhone(410) 663-8100
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ik Jo Ahn is affiliated with 3 sites of care and 1 medical group
Dr. Ahn's primary practice is Mercy Medical Center in Baltimore, Maryland. Dr. Ahn is also affiliated with Mercy Medical Center. The medical group on file is North Calvert Anesthesiology Services. Dmand AI also links Dr. Ahn to 1 more group practice or clinic, named with a free account.
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. Ik Jo Ahn's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ahn practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Mercy Medical Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ik Jo Ahn is one of 965 anesthesiologists in Maryland
Anesthesiology is Dr. Ahn's primary specialty in the NPI Registry, under taxonomy code 207L00000X. Dr. Ahn is licensed in Maryland.
Specialties and state licenses
- Anesthesiology, MarylandPrimary
Anesthesiologists near Dr. Ahn
Counts of anesthesiologists 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. Ik Jo Ahn billed Medicare for 182 services in 2024
CMS data shows 182 Medicare services from Dr. Ahn across 6 procedure codes in 2024, for 175 Medicare patients. Medicare paid $21,038 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Ahn's Medicare services by type, 2024
- Surgery120
- Anesthesia62
Dr. Ahn compared with the Maryland median for anesthesiologists, 2024
- Dr. Ahn
- Maryland median
- Medicare services
- 182vs 10180% above
- Medicare patients
- 175vs 176Close to median
Medians across 918 anesthesiologists in Maryland with Dmand AI profiles that report each measure.
Dr. Ahn'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.
Need commercial claims for Dr. Ahn?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ahn and other anesthesiologists in Maryland.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ik Jo Ahn treated 175 Medicare patients in 2024, average age 71
CMS counts 175 Medicare patients who saw Dr. Ahn in 2024. The largest group is 65 to 74, with 108 patients. 75% of them have arthritis, and 75% have high blood pressure. 17% are also on Medicaid. Their average risk score is 1.04, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ahn's median patient age at 64, with 69% women.
Dr. Ahn's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ahn's Medicare patients by sex, 2024
- Women10359%
- Men7241%
Chronic conditions among Dr. Ahn's Medicare patients, 2024
- Arthritis75%
- High blood pressure75%
- High cholesterol75%
- Anxiety31%
- Mood disorders31%
- Depression28%
- Diabetes28%
- Ischemic heart disease27%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ahn's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women69%
- Men31%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
How Dr. Ik Jo Ahn takes part in Medicare
Dr. Ahn 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. Ik Jo Ahn received $224 in industry payments from 2024 to 2025
CMS Open Payments shows 11 general payments to Dr. Ahn from 2 drug and device companies from 2024 to 2025. Food and beverage make up the largest share, 100% of the total. Merck Sharp & Dohme Corporation paid the most, $190.
General payments to Dr. Ahn by program year, 2024 to 2025
Companies that paid Dr. Ahn the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ik Jo Ahn graduated from George Washington University School of Medicine
Dr. Ahn graduated from George Washington University School of Medicine in 1999.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Ik Jo Ahn'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 DataMedicare Physician & Other Practitioners - 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) |
| 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. Ik Jo Ahn
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. Ik Jo Ahn's NPI number?
Dr. Ik Jo Ahn's NPI number is 1215917893. It was assigned on January 19, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ik Jo Ahn?
Dr. Ik Jo Ahn is an anesthesiologist in Baltimore, Maryland. The primary specialty in the NPI Registry is Anesthesiology Physician (taxonomy code 207L00000X).
Where does Dr. Ik Jo Ahn practice?
Dr. Ahn practices at 345 St Paul Pl, Baltimore, MD 21202. Dr. Ahn's primary practice is Mercy Medical Center in Baltimore, Maryland. Dmand AI also links Dr. Ahn to 1 group practice or clinic.
What is Dr. Ik Jo Ahn's office phone number?
The practice phone on file for Dr. Ahn is (410) 663-8100.
What is Dr. Ik Jo Ahn's medical license number?
Dr. Ahn holds Maryland license D0056642.
Which hospitals is Dr. Ik Jo Ahn affiliated with?
Dr. Ahn is affiliated with Mercy Medical Center.
What medical group is Dr. Ik Jo Ahn part of?
Dr. Ahn is linked to North Calvert Anesthesiology Services.
Does Dr. Ik Jo Ahn accept Medicare?
Yes. CMS data shows Dr. Ahn billed Medicare for 182 services in 2024, and Dr. Ahn accepts Medicare assignment.
How many Medicare patients does Dr. Ik Jo Ahn see?
CMS counts 175 Medicare patients who saw Dr. Ahn in 2024, with an average age of 71.
What services does Dr. Ik Jo Ahn bill to Medicare?
In 2024, Dr. Ahn's most billed Medicare services were surgery: brain, spine and nerves (64447), surgery: brain, spine and nerves (64999) and anesthesia (01402).
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Where did Dr. Ik Jo Ahn go to medical school?
Dr. Ahn graduated from George Washington University School of Medicine in 1999.
Has Dr. Ik Jo Ahn received payments from drug or device companies?
CMS Open Payments shows $224 in general payments to Dr. Ahn from 2 companies from 2024 to 2025. The largest total came from Merck Sharp & Dohme Corporation.
How long has Dr. Ik Jo Ahn been practicing?
Dr. Ahn graduated from medical school in 1999, 27 years ago.
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