Dr. Matthew Grant Nier, DO
- Part D claims, 2024
- 93
- Hospital affiliations
- 2
- Industry payments
- $4,091
- Medical groups
- 3
- State license
- 1
- Practice address
- 130 Pablo St, Lakeland, FL 33803
- Practice phone
- Call (863) 687-7251
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Lakeland Regional Health Systems, Inc.
Lakeland, Florida
Find Dr. Nier's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Matthew Grant Nier is a general surgeon in Lakeland, Florida
Dr. Nier practices at Lakeland Regional Health Systems, Inc. in Lakeland, Florida.
Dr. Nier's NPI, 1376003376, was assigned on March 25, 2019. Dr. Nier holds Virginia license 0102208472.
- NPI
- 1376003376NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6406393560
- NPI enumeration date
- March 25, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (863) 687-7251
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Matthew Grant Nier practices at Lakeland Regional Health Systems, Inc. in Lakeland, Florida
Dr. Nier's primary practice is Lakeland Regional Health Systems, Inc., at 130 Pablo St, Lakeland, FL 33803 in Polk County. The practice phone is (863) 687-7251.
- Lakeland Regional Health Systems, Inc.130 Pablo St, Lakeland, FL 33803 · Polk CountyPhone(863) 687-7251
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Matthew Grant Nier is affiliated with 4 sites of care and 3 medical groups
Dr. Nier's primary practice is Lakeland Regional Health Systems, Inc. in Lakeland, Florida. Dr. Nier is also affiliated with Lakeland Regional Health Medical Center. The medical group on file is Lakeland Regional Health. Dmand AI also links Dr. Nier to 1 more hospital, 2 medical groups and 1 group practice or clinic, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Matthew Grant Nier's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Nier practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lakeland Regional Health Systems, Inc. | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Matthew Grant Nier is one of 1,593 general surgeons in Florida
Surgery is Dr. Nier's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Nier is licensed in Virginia.
Specialties and state licenses
- Surgery, VirginiaPrimary
General surgeons near Dr. Nier
Counts of general surgeons with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Matthew Grant Nier's patients have a median age of 53
Across all payers, Dmand AI patient panel data puts Dr. Nier's median patient age at 53, with 74% women.
Dr. Nier's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women74%
- Men25%
Source: Dmand AI Patient Panel Data
Dr. Matthew Grant Nier wrote 93 Medicare Part D claims in 2024
In 2024, Dr. Nier wrote 93 Medicare Part D claims for 37 patients. 99% of them were for generic drugs. CMS names the drug for 62 of them, across 4 drugs with 11 or more claims each, at $1,988 in total drug cost. In 2022, CMS named 12 claims across 1 drug.
Dr. Nier's Part D claims by kind of drug, 2024
- Generic92 claims99%
- Brand-name and other1 claims1%
Dr. Nier's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Nier's Part D claims, 2024
- Opioids23%21 of 93 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2022 to 2024
- 2022
- 2024
- Claims for drugs CMS names
- 2022: 122024: 62417%
Drugs named by CMS: 4 in 2024, 1 in 2022.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Matthew Grant Nier takes part in Medicare
Dr. Nier accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Upper gastrointestinal (GI) endoscopy for acid reflux: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Matthew Grant Nier received $4,091 in industry payments from 2024 to 2025
CMS Open Payments shows 28 general payments to Dr. Nier from 4 drug and device companies from 2024 to 2025. Travel and lodging make up the largest share, 50% of the total. Medtronic, Inc. paid the most, $1,924.
General payments to Dr. Nier by program year, 2024 to 2025
General payments to Dr. Nier by kind, 2024 to 2025
- Travel and lodging$2,05850%
- Food and beverage$2,03350%
Companies that paid Dr. Nier the most, 2024 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Matthew Grant Nier's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Matthew Grant Nier
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Matthew Grant Nier's NPI number?
Dr. Matthew Grant Nier's NPI number is 1376003376. It was assigned on March 25, 2019, and it is active in the NPI Registry.
What kind of doctor is Dr. Matthew Grant Nier?
Dr. Matthew Grant Nier is a general surgeon in Lakeland, Florida. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Matthew Grant Nier practice?
Dr. Nier practices at 130 Pablo St, Lakeland, FL 33803. Dr. Nier's primary practice is Lakeland Regional Health Systems, Inc. in Lakeland, Florida. Dmand AI also links Dr. Nier to 1 hospital, 2 medical groups and 1 group practice or clinic.
What is Dr. Matthew Grant Nier's office phone number?
The practice phone on file for Dr. Nier is (863) 687-7251.
What is Dr. Matthew Grant Nier's medical license number?
Dr. Nier holds Virginia license 0102208472.
Which hospitals is Dr. Matthew Grant Nier affiliated with?
Dr. Nier is affiliated with Lakeland Regional Health Medical Center. Dmand AI links Dr. Nier to 1 more hospital.
What medical group is Dr. Matthew Grant Nier part of?
Dr. Nier is linked to Lakeland Regional Health. Dmand AI links Dr. Nier to 2 more medical groups.
Does Dr. Matthew Grant Nier accept Medicare?
Yes. CMS lists Dr. Nier as accepting Medicare assignment.
What drugs does Dr. Matthew Grant Nier prescribe most?
In 2024 Medicare Part D data, Dr. Nier's most prescribed drugs by claims were Oxycodone HCl, Gabapentin and Enoxaparin Sodium.
Has Dr. Matthew Grant Nier received payments from drug or device companies?
CMS Open Payments shows $4,091 in general payments to Dr. Nier from 4 companies from 2024 to 2025. The largest total came from Medtronic, Inc.
How long has Dr. Matthew Grant Nier been practicing?
Dr. Nier graduated from medical school in 2019, 7 years ago.
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