Lauren Merz, MD
NPI 1073176939 · Hematology (Internal Medicine) Physician · Ann Arbor, MI
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lauren Merz, MD is a Hematology (Internal Medicine) Physician provider in Ann Arbor, MI (NPI 1073176939).
Provider details
- NPI number
- 1073176939
- Entity type
- Individual
- Primary specialty
- Hematology (Internal Medicine) PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- 280048 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
7 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
3 documented practice locations
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$3,270 across 1 record (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
Additional practice locations (2)
- 55 Fruit StBoston, MA 02114-2621Phone: (617) 726-2000
- 75 Francis StBoston, MA 02115-6110Phone: (617) 732-5500
Registry dates
- Enumerated
- 2019-04-17
- Last updated
- 2025-07-16
- Certified
- 2025-07-16
Frequently asked questions
- What is Lauren Merz's NPI number?
- Lauren Merz's National Provider Identifier (NPI) is 1073176939, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lauren Merz's specialty?
- Lauren Merz is listed in the NPPES registry with a primary specialty of Hematology (Internal Medicine) Physician (Allopathic & Osteopathic Physicians).
- Where is Lauren Merz located?
- Lauren Merz's practice location on file with NPPES is 1500 E Medical Center Dr, Ann Arbor, MI 48109-5000.
- What is Lauren Merz's phone number?
- The practice phone number listed in the NPPES registry for Lauren Merz is (734) 936-4000.
- Does Lauren Merz accept Medicare?
- Lauren Merz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lauren Merz's NPI active?
- Yes — Lauren Merz's NPI (1073176939) is active in the NPPES registry as of the last update on 2025-07-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.