Mary Herzog, MD
NPI 1750543674 · Orthopaedic Surgery Physician · Grand Rapids, MI
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mary Herzog, MD is a Orthopaedic Surgery Physician provider in Grand Rapids, MI (NPI 1750543674).
Provider details
- NPI number
- 1750543674
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 4301093037 (MI)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
17 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
130 Medicare services, 2024 (ranked within specialty)
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 methodology.
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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 80 | $65 |
| Treatment of Upper End of Broken Thigh Bone With Placement of Stabilizing Device Or Prosthetic Replacement27236 | 19 | $1,181 |
| Treatment of Broken Neck of Thigh Bone With Bone Implant27245 | 19 | $1,211 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 12 | $80 |
Typical Medicare-allowed amounts for these services range $65–$1,211 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-07-01
- Last updated
- 2008-07-01
Frequently asked questions
- What is Mary Herzog's NPI number?
- Mary Herzog's National Provider Identifier (NPI) is 1750543674, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mary Herzog's specialty?
- Mary Herzog is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Mary Herzog located?
- Mary Herzog's practice location on file with NPPES is 300 Lafayette Ave Se # 3400, Grand Rapids, MI 49503-4600.
- What is Mary Herzog's phone number?
- The practice phone number listed in the NPPES registry for Mary Herzog is (616) 752-6615.
- Does Mary Herzog accept Medicare?
- Mary Herzog is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mary Herzog's NPI active?
- Yes — Mary Herzog's NPI (1750543674) is active in the NPPES registry as of the last update on 2008-07-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.