DARREN LLOYD GRUNWALDT (D.O.) – Neuromusculoskeletal Medicine & OMM Physician, NPI 1437371788
Neuromusculoskeletal Medicine & OMM Physician
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Profile Insights
NPPES metrics only — not quality of care.
158 OSTEOPATHIC MANIPULATIVE MEDICINE in MI
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Provider Addresses for DARREN LLOYD GRUNWALDT (D.O.)
1150 E SHERMAN BLVD
STE 2400
MUSKEGON, MI 494441886
Phone: (231) 672-6336
Type: Mailing
Metro Health Hospital, 5900, Byron Center Avenue Southwest, Wyoming, Kent County, Michigan, 49519, United States
MEDICAL ADMINISTRATION
WYOMING, MI 495199606
Phone: (616) 252-3243
Fax: (616) 252-0260
Type: Mailing
781, 36th Street Southeast, Wyoming, Kent County, Michigan, 49548, United States
WYOMING, MI 495482319
Phone: (616) 252-4100
Fax: (616) 252-4953
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
No Open Payments data available for this provider.
This can happen when there are no reportable CMS Open Payments records.
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2009-08-27
PECOS data refreshed: 2026-06-15
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20090827000605 | I | Osteopathic Manipulative Medicine | MI | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 90 | 29 | $0 |
| 98927 | Osteopathic manipulative treatment, 5-6 body regions | 39 | 20 | $0 |
| 98928 | Osteopathic manipulative treatment, 7-8 body regions | 35 | 16 | $0 |
Insurance plans in this area (ZIP 49444)
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Provider's Procedures
Group practice members
| Name | Specialty | State |
|---|---|---|
| Internal Medicine, Hospitalist | IL | |
| Osteopathic Manipulative Medicine, Emergency Medicine | TX | |
| Hospitalist, Internal Medicine | MI | |
| Clinical Psychologist | CA | |
| Physician Assistant | MI | |
| Hospitalist, Internal Medicine | MI | |
| Physician Assistant | MI | |
| Internal Medicine | MI | |
| Physician Assistant | MI | |
| Physician Assistant | MT |
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