Melissa Grube, M.D.
NPI 1538690292 · Family Medicine Physician · Mequon, WI
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Melissa Grube, M.D. is a Family Medicine Physician provider in Mequon, WI (NPI 1538690292).
Provider details
- NPI number
- 1538690292
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
83% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
388 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. 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 .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 196 | $120 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 102 | $122 |
| Administration of Influenza Virus VaccineG0008 | 26 | $30 |
| Hemoglobin A1c Level83036 | 24 | $10 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 21 | $85 |
| Administration of Pneumococcal VaccineG0009 | 19 | $30 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 93 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 441 | 127 |
| Levothyroxine Sodium | 349 | 81 |
| Amlodipine Besylate | 277 | 75 |
| Losartan Potassium | 241 | 64 |
| Lisinopril | 235 | 64 |
| Rosuvastatin Calcium | 199 | 50 |
| Hydrochlorothiazide |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$45 across 2 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2017-03-24
- Last updated
- 2020-11-02
- Certified
- 2020-11-02
Frequently asked questions
- What is Melissa Grube's NPI number?
- Melissa Grube's National Provider Identifier (NPI) is 1538690292, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Grube's specialty?
- Melissa Grube is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Melissa Grube located?
- Melissa Grube's practice location on file with NPPES is 12800 N Port Washington Rd, Mequon, WI 53097-2415.
- What is Melissa Grube's phone number?
- The practice phone number listed in the NPPES registry for Melissa Grube is (262) 243-9600.
- Does Melissa Grube accept Medicare?
- Melissa Grube is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Melissa Grube's NPI active?
- Yes — Melissa Grube's NPI (1538690292) is active in the NPPES registry as of the last update on 2020-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.