Mariah Marissa Fields-Cooper, DDS
General Practice Dentistry · Longview, TX
Mariah Marissa Fields-Cooper, DDS is a general practice dentistry with a practice address in Longview, Texas, and NPI 1245796002, issued on Feb 18, 2019. Check the license (Texas 34856, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mariah Marissa Fields-Cooper
- Credential
- DDS
- Primary taxonomy
- General Practice Dentistry 1223G0001X
- License number
- 34856 TX
Self-reported in NPPES; status is on the state search - Practice location
- 1499 E Marshall Ave, Longview, TX 75601
- Phone
- (903) 242-9777
- Enumerated
- Feb 18, 2019
- Record last updated
- Oct 3, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (903) 242-9778
- Entity
- Type 1 · individual
8 nearest general practice dentistry records → All 10,056 in Texas → Look up another NPI →
Also registered at 1499 E Marshall Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Omowumi Ihionkhan, D.D.S.General Practice Dentistry1396836623
- Uchechukwu NwasurubaGeneral Practice Dentistry1437859410
Verify Mariah Marissa Fields-Cooper in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 34856Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
63% fewer Medicare Part D claims than the average general practice dentistry in 2024
31 Medicare Part D claims for 26 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin16 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $45.79
1 payment: food and beverage; the largest payer was Align Technology, Inc. The 41,669 providers of this specialty with any payment received $597.01 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mariah Marissa Fields-Cooper among 10,056 general practice dentistry records in Texas
Mariah Marissa Fields-Cooper, DDS is one of 10,056 general practice dentistry records with a practice address in Texas. 64% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 80% of them.
- NPI issued2019 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 64% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2019 · 71% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
59 general practice dentistry records list a practice address in Longview
They are 59 of the 2,066 NPPES records with a practice address in Longview, and 10,056 general practice dentistry records in Texas.
All 10,056 in Texas → Every provider in Longview → General Practice Dentistry nationwide →
The 8 general practice dentistry records with the nearest ZIP codes
- Brenda Copeland, D.D.S.Longview, TX 756011285704775
- Brian Dolive, D.D.S.Longview, TX 756011982614673
- Robert Guttry, DDSLongview, TX 756011689787608
- Theral Hargis, DDSLongview, TX 756011740366996
- Omowumi Ihionkhan, D.D.S.Longview, TX 756011396836623
- Samuel Mack, D.D.S.Longview, TX 756011730225103
- Uchechukwu NwasurubaLongview, TX 756011437859410
- John Red FoxLongview, TX 756011689710030
Common questions
What is Mariah Marissa Fields-Cooper, DDS's NPI number?
Mariah Marissa Fields-Cooper, DDS's National Provider Identifier (NPI) is 1245796002, issued on Feb 18, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Mariah Marissa Fields-Cooper, DDS located?
The NPPES record lists a practice address at 1499 E Marshall Ave, Longview, TX, 75601. Phone: (903) 242-9777. Providers update this record themselves, so call before visiting.
How can I verify Mariah Marissa Fields-Cooper, DDS's license?
NPPES lists Texas license number 34856, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
How much does Mariah Marissa Fields-Cooper, DDS prescribe under Medicare Part D?
In 2024, Mariah Marissa Fields-Cooper, DDS had 31 Medicare Part D claims for 26 beneficiaries; the average among general practice dentistry prescribers was 83. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.