Active NPI 1578857835 Individual Practitioner Male Practitioner

Dr. Chi Yung Ahn , MD

Internal Medicine • Chicago, IL

Professional Overview & Biography Verified Profile Summary

Dr. Chi Ahn, MD is a registered healthcare professional specializing in Internal Medicine in Chicago, IL. Practice services are available at 5140 N CALIFORNIA AVE under active NPI credentials.

Frequently performed procedures and clinical services include established patient outpatient office visit, insertion of needle into vein for collection of blood sample, influenza vaccine split virus, preservative free. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

5140 N California Ave
Ste 705

Chicago, IL 606253645

Telephone 7739897554

Associated Practice Facility / Clinic

🏢 Swedish Covenant Management Services, Inc. Facility NPI 1760432348

Specialty Benchmarks & Practice Insights

Comparative analytics for Internal Medicine in Chicago, IL

Active Practitioner

Practitioner Clinical Experience

Active

City Avg: 21.8 Yrs

State Avg: 28.9 Yrs

Regional Practice Density

2969 Specialists

Practicing in Chicago, IL (7544 Statewide)

Telehealth Adoption Rate

12.8% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount

47.2% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2022)

Reporting Year:

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	361	256	$242.10	$136.76
99213 Established patient office or other outpatient visit, typically 15 minutes	125	88	$177.00	$97.96
36415 Insertion of needle into vein for collection of blood sample	83	78	$31.00	$2.99

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	989	405	$242.00	$139.52
99213 Established patient office or other outpatient visit, typically 15 minutes	316	174	$177.00	$98.33
36415 Insertion of needle into vein for collection of blood sample	258	206	$31.00	$2.98
90662 Influenza vaccine split virus, preservative free	87	87	$120.00	$65.26
G0008 Administration of influenza virus vaccine	86	86	$63.00	$17.94
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more	26	26	$371.00	$181.91
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	14	14	$148.00	$60.35

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	702	348	$192.75	$81.09
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	556	328	$295.07	$117.05
36415 Insertion of needle into vein for collection of blood sample	331	234	$22.56	$2.98
99441 Telephone medical discussion with physician, 5-10 minutes	108	84	$134.79	$49.26
G0008 Administration of influenza virus vaccine	102	99	$65.37	$17.66
90662 Influenza vaccine split virus, preservative free	100	97	$125.37	$60.61
99233 Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes	35	11	$283.30	$113.15
G0009 Administration of pneumococcal vaccine	33	32	$69.24	$17.52
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	30	30	$286.75	$116.87
99212 Established patient office or other outpatient visit with straightforward medical decision making, if using time, 10 minutes or more	26	26	$142.74	$49.54
90670 Pneumococcal vaccine for injection into muscle	22	21	$389.59	$220.24
99442 Telephone medical discussion with physician, 11-20 minutes	16	16	$196.10	$81.14
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	11	11	$177.84	$117.01

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	1,070	369	$299.36	$115.58
99213 Established patient office or other outpatient visit, typically 15 minutes	902	352	$202.61	$79.07
36415 Insertion of needle into vein for collection of blood sample	538	313	$20.75	$2.94
G0008 Administration of influenza virus vaccine	167	167	$68.99	$17.33
90662 Influenza vaccine split virus, preservative free	164	164	$132.08	$54.80
G0009 Administration of pneumococcal vaccine	61	60	$70.79	$17.33
90670 Pneumococcal vaccine for injection into muscle	48	48	$353.42	$200.37
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	33	33	$305.35	$113.84
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	13	13	$171.02	$109.98

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	1,373	415	$195.74	$76.94
36415 Insertion of needle into vein for collection of blood sample	494	287	$20.00	$2.94
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	488	295	$288.02	$113.48
G0008 Administration of influenza virus vaccine	106	106	$66.61	$21.31
90662 Influenza vaccine split virus, preservative free	103	103	$77.55	$52.30
G0009 Administration of pneumococcal vaccine	54	54	$68.50	$21.31
90670 Pneumococcal vaccine for injection into muscle	34	34	$342.57	$198.13
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	32	32	$293.95	$115.60
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	20	20	$164.44	$105.59

HCPCS Code & Description	Services	Patients	Submitted Charge	Medicare Allowed
99213 Established patient office or other outpatient visit, typically 15 minutes	1,141	393	$195.75	$76.94
36415 Insertion of needle into vein for collection of blood sample	490	311	$20.00	$2.94
99214 Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more	467	257	$287.06	$113.38
G0008 Administration of influenza virus vaccine	220	219	$66.39	$26.42
90662 Influenza vaccine split virus, preservative free	217	217	$77.31	$48.05
99203 New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more	155	155	$293.95	$115.55
99310 Subsequent nursing facility care with high level of medical decision making, per day, if using time, at least 45 minutes	39	37	$355.78	$143.78
90670 Pneumococcal vaccine for injection into muscle	28	28	$342.57	$185.95
G0009 Administration of pneumococcal vaccine	22	22	$68.50	$26.42
90471 Administration of 1 vaccine	17	17	$68.50	$26.63
90732 Vaccine for pneumococcal polysaccharide for injection beneath the skin or into muscle, patient 2 years or older	11	11	$164.44	$96.87

Medical Specialties & State Licenses

CMS Verified: 2020-10-30

Internal Medicine Primary Specialty

NUCC Taxonomy Code: 207R00000X

State License IL 036138610

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Internal Medicine - Geriatric Medicine

NUCC Taxonomy Code: 207RG0300X

State License IL 036138610

An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners

Dr. Chathushki Bandara , DO

Emergency Medicine

NPI 1003546847

Doctor of Osteopathic Medicine (D.O.)

Pierce Paterakos

Internal Medicine

NPI 1003759945

Dr. Vaseem Qureshi , MD

Internal Medicine - Nephrology

NPI 1003838574

Doctor of Medicine (M.D.)

Dr. Wasay Humayun , MD

Family Medicine

NPI 1013154327

Doctor of Medicine (M.D.)

Dr. Morgan Clem , DO

Hospitalist

NPI 1013582147

Doctor of Osteopathic Medicine (D.O.)

Lloyd Young

Podiatrist - Foot & Ankle Surgery

NPI 1013803436

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

6 Historical Events

✅

NPI Profile Active December 14, 2015

NPI status registered as active in NPPES database

📍

Updated Practice Location December 14, 2015

Registered at 5140 N CALIFORNIA AVE, STE 705, CHICAGO, IL 606253645 (Tel: 7739897554)

📍

Updated Business Mailing Address December 14, 2015

Registered at 2740 W FOSTER AVE, LL7, CHICAGO, IL 606253500 (Tel: 7738788200)

👤

Provider Name / Credentials Updated December 14, 2015

Recorded as CHI AHN, M.D.

🎓

Medical Taxonomy / Specialty Registered (Primary Specialty) December 14, 2015

Internal Medicine (License #036138610 in IL)

🟢

Initial NPI Registration & Enumeration June 04, 2011

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1578857835

Entity Type:

Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)

Enumeration Date: June 04, 2011

Last Update: October 30, 2020

Sole Proprietor: No

Update or Correct Profile

Mailing Address

2740 W Foster Ave, Ll7

Chicago, IL 606253500

Phone: 7738788200

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).

⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.