Physician Profile
Douglas D. Fosselman, M.D. practices internal medicine in Westerville, OH. Douglas is a 1982 graduate of Ohio State University College of Medicine. Medicare claims data shows Douglas provided 3,843 services to 2,128 patients. The services billed most often include low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml, insertion of needle into vein for collection of blood sample, and complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count. The provider's National Provider Identifier (NPI) is 1679556229.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
555 W SCHROCK RD SUITE 110
Westerville, OH 43081
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.
Most searched conditions
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
Most searched procedures
Preventive and evaluation
Screening and diagnostic testing
Bones & Joints
Brain and nerves
Cancer screening
Digestive
Exams & Consultations
Heart & Circulation
Heart health
Imaging referral
Immunizations
Lab tests
Lungs & Breathing
Metabolic & Weight
Minor procedures
Office procedures
Office Procedures
Pain management
Preventive & Routine Care
Screenings & Diagnostics
Sexual health
3,843 services · 2,128 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
375 | More often than most peers in Internal Medicine |
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
98 | More often than most peers in Internal Medicine |
| Influenza vaccine split virus, preservative free | Treatment | 90662 |
39 | As often as other peers in Internal Medicine |
| Low osmolar contrast material, 300-399 mg/ml iodine concentration, per ml | Billing code | Q9967 |
1,100 | Less often than most peers in Internal Medicine |
| Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | Lab test | 85025 |
261 | More often than most peers in Internal Medicine |
| Blood test, comprehensive group of blood chemicals | Lab test | 80053 |
252 | As often as other peers in Internal Medicine |
| Blood test, thyroid stimulating hormone (tsh) | Lab test | 84443 |
233 | More often than most peers in Internal Medicine |
| Blood test, lipids (cholesterol and triglycerides) | Lab test | 80061 |
191 | 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 |
184 | As often as other peers in Internal Medicine |
| Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Billing code | G0439 |
162 | More 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.
Douglas D. Fosselman is an internist in Westerville, OH. That is the designation recorded for this NPI in the federal registry, where it is listed as “Internal Medicine”.
NPI registry
Douglas D. Fosselman is listed at 555 W Schrock Rd Suite 110, Westerville, OH 43081. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (614) 882-0708. Contact the office directly to confirm availability and scheduling.
NPI registry
Douglas D. Fosselman's National Provider Identifier is 1679556229. 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
Douglas D. Fosselman attended Ohio State University College of Medicine, graduating in 1982. This comes from the CMS National Downloadable File.
CMS public data
Douglas D. Fosselman has 44 years experience. Calculated from a graduation year of 1982, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Douglas D. Fosselman performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report 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
Not yet. This profile is built from public federal data and has not been confirmed by Douglas D. Fosselman. If this is you, claiming it is free.
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