Mark Goelzer, MD
NPI 1619902111 · Pediatrics Physician · Janesville, WI
Enrolled with Medicare as Practitioner - Pediatric Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Goelzer, MD is a Pediatrics Physician provider in Janesville, WI (NPI 1619902111).
Provider details
- NPI number
- 1619902111
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 21490-20 (WI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Varicella-Zoster Ge/As01b/Pfbrand: Shingrix | 96 | 75 |
| Rsvpref3 Antigen/As01e/Pfbrand: Arexvy | 79 | 79 |
| Diphth,pertuss(acell),tet Vacbrand: Boostrix Tdap | 26 | 26 |
| Haemoph B Poly Conj-Tet Tox/Pfbrand: Acthib | 11 | — |
| Poliomyelitis Vaccine, Killedbrand: Ipol | 11 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-12
- Last updated
- 2014-09-23
Frequently asked questions
- What is Mark Goelzer's NPI number?
- Mark Goelzer's National Provider Identifier (NPI) is 1619902111, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Goelzer's specialty?
- Mark Goelzer is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Goelzer located?
- Mark Goelzer's practice location on file with NPPES is 3524 E Milwaukee St, Janesville, WI 53546-1626.
- What is Mark Goelzer's phone number?
- The practice phone number listed in the NPPES registry for Mark Goelzer is (608) 756-7100.
- Does Mark Goelzer accept Medicare?
- Mark Goelzer is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Goelzer's NPI active?
- Yes — Mark Goelzer's NPI (1619902111) is active in the NPPES registry as of the last update on 2014-09-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.