Are you Nicholas C. Ahn, M.D.? This profile is yours to edit: update your address, phone, photo and services.
Edit this profileWhere to find Nicholas C. Ahn, M.D.
- Springfield location main office
751 N Rutledge St, Suite 1100, Springfield, IL 62702 - Kalamazoo location
5629 Stadium Dr Ste B, Kalamazoo, MI 49009
About Dr. Ahn
Nicholas C. Ahn, M.D. practices internal medicine in Springfield, IL. Nicholas is a 2013 graduate of Michigan State University College of Human Medicine. Nicholas is also listed as specializing in psychiatry. According to Medicare claims data, Nicholas cared for 531 Medicare patients across 907 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days, and annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit. The provider's National Provider Identifier (NPI) is 1376983346.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (217) 545-8000
- Email not available
Practice Locations
751 N RUTLEDGE ST SUITE 1100
Springfield, IL 62702
5629 Stadium Dr Ste B
Kalamazoo, MI 49009
Conditions Commonly Evaluated or Treated
Within Internal Medicine generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
- Allergies
- Diabetes
- Flu
- Hypothyroidism
- Strep throat
- UTI
Cardiometabolic
Digestive and liver
Endocrine, blood, and bone
Infectious disease
Kidney and urinary
Respiratory
Blood & Circulation
Blood disorders
Brain & Nerves
Brain and nerves
Cardiac and vascular
Digestive
Heart & Circulation
Infections
Kidney & Bladder
Lungs & Breathing
Mental Health
Neurologic and behavioral
Pain
Rheumatologic and pain
Procedures & services
Most searched procedures
- Annual physical
- Blood test
- Flu shot
- Medicare wellness visit
- Sick visit
- TB test
- Well-woman exam
Preventive and evaluation
- Medication management
- Post-hospital transitional care
Screening and diagnostic testing
Bones & Joints
Brain and nerves
Cancer screening
- Colon Cancer Screening Referral
- Mammogram Referral
Digestive
Exams & Consultations
Heart & Circulation
Heart health
- Cardiac Stress Test Referral
Imaging referral
- Abdominal Ultrasound Referral
Immunizations
Lab tests
Lungs & Breathing
- At-Home Sleep Study Order
Metabolic & Weight
- Weight Loss Injections and Medication
Minor procedures
Office procedures
Office Procedures
- Skin Tag and Mole Removal
- Vitamin B12 Injections
- Wart Removal
Pain management
Preventive & Routine Care
Screenings & Diagnostics
- Bone Density Scan Referral
- Diabetes Screening and A1C Test
Sexual health
- STI Testing
Procedures Most Often Billed to Medicare
907 services · 531 patients · 10 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
41 | As often as other peers in Internal Medicine |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
27 | Less often than most peers in Internal Medicine |
| Injection, vitamin b-12 cyanocobalamin, up to 1000 mcg | Drug given | J3420 |
34 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
446 | More often than most peers in Internal Medicine |
| Remote monitoring of physiologic parameters, initial supply of devices with daily recordings or programmed alerts transmission, each 30 days | Office visit | 99454 |
89 | Less often than most peers in Internal Medicine |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
85 | As often as other peers in Internal Medicine |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
68 | More often than most peers in Internal Medicine |
| Management using the results of remote vital sign monitoring per calendar month, first 20 minutes | Office visit | 99457 |
58 | Less often than most peers in Internal Medicine |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
31 | Less often than most peers in Internal Medicine |
| Administration of influenza virus vaccine | Billing code | G0008 |
28 | As often as other peers in Internal Medicine |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internists at this location 8
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 7
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 31 related providers in 4 groups
Other internists in Springfield 7
Same specialty, same city.
Trained at Michigan State University College of Human Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2013 at Michigan State University College of Human Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Injection of drug or substance under skin or into muscle 8
Providers in IL who bill this service to Medicare most often.
Common questions
What kind of doctor is Nicholas C. Ahn?
Nicholas C. Ahn is an internist in Springfield, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
What is Nicholas C. Ahn's address?
Nicholas C. Ahn is listed at 751 N Rutledge St Suite 1100, Springfield, IL 62702. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Nicholas C. Ahn?
The number on file is (217) 545-8000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Nicholas C. Ahn's NPI number?
Nicholas C. Ahn's National Provider Identifier is 1376983346. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Nicholas C. Ahn train?
Nicholas C. Ahn attended Michigan State University College of Human Medicine, graduating in 2013. This comes from the CMS National Downloadable File.
CMS public data
How long has Nicholas C. Ahn been practicing?
Nicholas C. Ahn has 13 years experience. Calculated from a graduation year of 2013, reported in the CMS National Downloadable File.
CMS public data
What procedures does Nicholas C. Ahn perform?
According to Medicare billing data, Nicholas C. Ahn provides treatments such as injection of drug or substance under skin or into muscle and influenza vaccine split virus, preservative free, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Nicholas C. Ahn confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Nicholas C. Ahn. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.