Physician Profile
Unclaimed ProfileAbout LETTINGA
Based in Grand Rapids, MI, Mark D Lettinga, MD is listed in the NPI registry under emergency medicine. Mark graduated from University of Michigan Medical School in 2016.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Lettinga specialise in?
Dr. Lettinga is an emergency medicine in Grand Rapids, MI. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “EMERGENCY MEDICINE”.
NPI registry
Where is Dr. Lettinga located?
Dr. Lettinga is listed at 100 MICHIGAN ST NE, Grand Rapids, MI 49503. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Lettinga's phone number?
The number on file is (616) 391-1774. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Dr. Lettinga?
Dr. Lettinga's National Provider Identifier is 1609223767. 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
Where did Dr. Lettinga go to medical school?
Dr. Lettinga attended University of Michigan Medical School, graduating in 2016. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Lettinga have?
Dr. Lettinga has 10 years experience. Calculated from a graduation year of 2016, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Lettinga do most often?
According to Medicare billing data, Dr. Lettinga the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Lettinga's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Lettinga. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (616) 391-1774
- Email not available
Practice Locations
100 MICHIGAN ST NE
Grand Rapids, MI 49503
Procedures Most Often Billed to Medicare
213 services · 211 patients · 3 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Emergency department visit with high level of medical decision making | Office visit | 99285 |
134 |
| Emergency department visit with moderate level of medical decision making | Office visit | 99284 |
52 |
| Critical care, first 30-74 minutes | Office visit | 99291 |
27 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other emergency medicines at this location 5
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 2
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 22 related providers in 3 groups
Other emergency medicines in Grand Rapids 6
Same specialty, same city.
Trained at University of Michigan Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 2016 at University of Michigan Medical School 8
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.