Physician Profile
Erin M. Pettijohn, M.D. practices hematology & oncology in Grand Rapids, MI. Erin is a 2011 graduate of Wayne State University School of Medicine. Medicare claims data shows Erin provided 24,083 services to 2,015 patients. The services billed most often include injection, filgrastim (g-csf), excludes biosimilars, 1 microgram, injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg, and injection, rituximab-arrx, biosimilar, (riabni), 10 mg.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
250 CHERRY ST SE STE 2200
Grand Rapids, MI 49503
Within Hematology and Oncology 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
Advanced Cancers
Blood & Lymph Disorders
Blood Cancers
Blood Disorders
Blood disorders
Bone & Soft Tissue Cancers
Digestive Cancers
Endocrine Cancers
Endocrine tumors
Gastrointestinal cancer
General oncology
Genetic Blood Disorders
Gynecologic cancer
Gynecologic Cancers
Head & Neck Cancers
Head and neck cancer
Neurologic Cancers
Oncologic emergencies
Ophthalmologic oncology
Skin cancer
Skin Cancers
Urologic Cancers
Most searched procedures
Biopsies & Diagnostics
Blood disorder care
Cancer Therapies
Cancer therapy
Cellular Therapies
Consultations
Diagnostic testing
Hematology Treatments
Imaging
Infusions
Interventional oncology
Supportive Cancer Care
Supportive cancer care
Surgical & Vascular Access
Testing & Genetics
Vascular access care
24,083 services · 2,015 patients · 25 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Insertion of needle into vein for collection of blood sample | Procedure | 36415 |
943 | More often than most peers in Hematology & Oncology |
| Administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle | Treatment | 96401 |
347 | More than most peers in Hematology & Oncology |
| Injection of additional new drug or substance into vein | Treatment | 96375 |
271 | As often as other peers in Hematology & Oncology |
| Administration of chemotherapy into vein, 1 hour or less | Treatment | 96413 |
180 | As often as other peers in Hematology & Oncology |
| Injection of drug or substance under skin or into muscle | Treatment | 96372 |
174 | As often as other peers in Hematology & Oncology |
| Administration of chemotherapy into vein, each additional hour | Treatment | 96415 |
158 | More often than most peers in Hematology & Oncology |
| Injection, filgrastim (g-csf), excludes biosimilars, 1 microgram | Drug given | J1442 |
9,300 | Too few peers to compare |
| Injection, immune globulin, (gammagard liquid), non-lyophilized, (e.g., liquid), 500 mg | Drug given | J1569 |
3,150 | More often than most peers in Hematology & Oncology |
| Injection, dexamethasone sodium phosphate, 1 mg | Drug given | J1100 |
1,318 | As often as other peers in Hematology & Oncology |
| Injection, ferric derisomaltose, 10 mg | Drug given | J1437 |
1,200 | Less often than most peers in Hematology & Oncology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Erin M. Pettijohn is a cancer specialist in Grand Rapids, MI. That is the designation recorded for this NPI in the federal registry, where it is listed as “Hematology & Oncology”.
NPI registry
Erin M. Pettijohn is listed at 250 Cherry St Se Ste 2200, Grand Rapids, MI 49503. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (616) 685-5600. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
Erin M. Pettijohn's National Provider Identifier is 1003101429. 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
Erin M. Pettijohn attended Wayne State University School of Medicine, graduating in 2011. This comes from the CMS National Downloadable File.
CMS public data
Erin M. Pettijohn has 15 years experience. Calculated from a graduation year of 2011, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Erin M. Pettijohn performs procedures including insertion of needle into vein for collection of blood sample; provides treatments such as administration of non-hormonal anti-neoplastic chemotherapy under skin or into muscle and injection of additional new drug or substance into vein, 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 Erin M. Pettijohn. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.