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Edit this profileAt a glance
- 535 Fairway Dr, Suite 107, Naperville, IL 60563
About Dr. Mollohan
William H. Mollohan, D.O. practices internal medicine in Naperville, IL. William is a 1985 graduate of Oklahoma State University College of Osteopathic Medicine. Medicare claims data shows William provided 699 services to 450 patients. The services billed most often include residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes, residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes, and physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allo. The provider's National Provider Identifier (NPI) is 1720006919.
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
- (630) 548-5936
- Email not available
Practice Locations
535 FAIRWAY DR SUITE 107
Naperville, IL 60563
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
- Heart disease
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
- EKG
- Spirometry
Bones & Joints
Brain and nerves
Cancer screening
- Colon Cancer Screening Referral
- Mammogram Referral
Digestive
Exams & Consultations
- Pre-Op Clearance Exam
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
- Ingrown toenail removal
- Suture removal
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
699 services · 450 patients · 14 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
15 | Less often than most peers in Internal Medicine |
| Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99349 |
178 | More often than most peers in Internal Medicine |
| Residence visit for established patient with high level of medical decision making, per day, if using time, at least 60 minutes | Office visit | 99350 |
113 | More often than most peers in Internal Medicine |
| Physician or allowed practitioner supervision of a patient receiving medicare-covered services provided by a participating home health agency (patient not present) requiring complex and multidisciplinary care modalities involving regular physician or allo | Billing code | G0181 |
73 | More often than most peers in Internal Medicine |
| Blood glucose (sugar) test performed by hand-held instrument | Lab test | 82962 |
70 | As often as other peers in Internal Medicine |
| Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | Billing code | G0180 |
39 | More often than most peers in Internal Medicine |
| Smoking and tobacco use intensive counseling, 4-10 minutes | Office visit | 99406 |
39 | More often than most peers in Internal Medicine |
| Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99490 |
38 | Less often than most peers in Internal Medicine |
| Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians | Billing code | G0179 |
34 | As often as other 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 |
31 | Less often than most 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 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
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 — 32 related providers in 4 groups
Other internists in Naperville 8
Same specialty, same city.
Trained at Oklahoma State University College of Osteopathic Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1985 at Oklahoma State University College of Osteopathic Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Influenza vaccine split virus, preservative free 8
Providers in IL who bill this service to Medicare most often.
Common questions
What kind of doctor is William H. Mollohan?
William H. Mollohan is an internist in Naperville, IL. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
What is William H. Mollohan's address?
William H. Mollohan is listed at 535 Fairway Dr Suite 107, Naperville, IL 60563. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with William H. Mollohan?
The number on file is (630) 548-5936. Contact the office directly to confirm availability and scheduling.
NPI registry
What is the NPI for William H. Mollohan?
William H. Mollohan's National Provider Identifier is 1720006919. 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 William H. Mollohan train?
William H. Mollohan attended Oklahoma State University College of Osteopathic Medicine, graduating in 1985. This comes from the CMS National Downloadable File.
CMS public data
How much experience does William H. Mollohan have?
William H. Mollohan has 41 years experience. Calculated from a graduation year of 1985, reported in the CMS National Downloadable File.
CMS public data
What procedures does William H. Mollohan perform?
According to Medicare billing data, William H. Mollohan provides treatments such as 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
Is William H. Mollohan's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by William H. Mollohan. If this is you, claiming it is free.
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