NPPES file of Aug 9, 2026

Marcella Sue Welker, N.P.

Family Nurse Practitioner · Saginaw, MI

Marcella Sue Welker, N.P. is a family nurse practitioner with a practice address in Saginaw, Michigan, and NPI 1073512646, issued on Jul 18, 2005. Check the license (Michigan 4704171054, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1073512646
Name
Marcella Sue Welker
Credential
N.P.
Primary taxonomy
Family Nurse Practitioner 363LF0000X
License number
4704171054 MI
Self-reported in NPPES; status is on the state search
Practice location
4450 Fashion Square Blvd, Saginaw, MI 48603
Phone
(989) 792-4090
Enumerated
Jul 18, 2005
Record last updated
Jul 13, 2026
Fax
(989) 792-4094
Medicare enrollment
Enrolled (PECOS I20101208000657); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest family nurse practitioner records → All 5,356 in Michigan → Look up another NPI →

Also registered at 4450 Fashion Square Blvd

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Helder Chin, M.D.Anesthesiology Physician1740571736
  2. Aubree Dalton, FNP-BCFamily Nurse Practitioner1306624804
  3. Matthew Eagleson, D.O.Pain Medicine (Anesthesiology) Physician1295020048
  4. Patricia Frick, N.P.Family Nurse Practitioner1942208822
  5. Shelly Garlitz, FNPFamily Nurse Practitioner1598138091
  6. Nicole Guest, FNP-CFamily Nurse Practitioner1649755794

Verify Marcella Sue Welker in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Michigan board licenses this profession
    Search for license 4704171054    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Michigan license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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4.5 times the Medicare Part D claims of the average family nurse practitioner in 2024

5,808 Medicare Part D claims for 519 beneficiaries, against an average of 1,305 among the 140,557 providers of this specialty who prescribed in Part D. Brand-name drugs were 5% of claims. 4,286 claims were for opioids.

  1. Marcella Welker5,808
  2. Specialty average1,305

Most prescribed

  1. Hydrocodone-Acetaminophen1,706 claims
  2. Morphine Sulfate Er573 claims
  3. Oxycodone-Acetaminophen534 claims
  4. Gabapentin491 claims
  5. Fentanyl301 claims
  6. Oxycodone Hcl243 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: $26.68

1 payment: food and beverage; the largest payer was SI-Bone, Inc. The 99,489 providers of this specialty with any payment received $650.95 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Marcella Welker$26.68
  2. Specialty average$650.95

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Comprehensive Pain Specialists, PLLCFlint, MI

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Marcella Sue Welker among 5,356 family nurse practitioner records in Michigan

Marcella Sue Welker, N.P. is one of 5,356 family nurse practitioner records with a practice address in Michigan. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 98% newer
  • In a Medicare fileYes · 78% of these records are
  • In the CMS Doctors and Clinicians fileYes · 61% of these records are
  • Graduated1999 · median 2019 among the 3,254 with a school on file
  • Record last updated2026 · 40% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LF0000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

191 family nurse practitioner records list a practice address in Saginaw

They are 191 of the 6,008 NPPES records with a practice address in Saginaw, and 5,356 family nurse practitioner records in Michigan.

All 5,356 in Michigan → Every provider in Saginaw → Family Nurse Practitioner nationwide →

The 8 family nurse practitioner records with the nearest ZIP codes

  1. Amanda Atha, NPSaginaw, MI 486031114356490
  2. David Benjamin, FNP-BCSaginaw, MI 486031629460100
  3. Joseph Chacko, FNP-BCSaginaw, MI 486031649511734
  4. Susan Falkenberg, FNP-BCSaginaw, MI 486031861724395
  5. Patricia Frick, N.P.Saginaw, MI 486031942208822
  6. Shelly Garlitz, FNPSaginaw, MI 486031598138091
  7. Joelle Gelmann, NP-CSaginaw, MI 486031679947675
  8. Alexandra Jurenka, FNP-CSaginaw, MI 486031376099242

Common questions

What is Marcella Sue Welker, N.P.'s NPI number?

Marcella Sue Welker, N.P.'s National Provider Identifier (NPI) is 1073512646, issued on Jul 18, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Marcella Sue Welker, N.P. located?

The NPPES record lists a practice address at 4450 Fashion Square Blvd, Saginaw, MI, 48603. Phone: (989) 792-4090. Providers update this record themselves, so call before visiting.

How can I verify Marcella Sue Welker, N.P.'s license?

NPPES lists Michigan license number 4704171054, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity only.

How much does Marcella Sue Welker, N.P. prescribe under Medicare Part D?

In 2024, Marcella Sue Welker, N.P. had 5,808 Medicare Part D claims for 519 beneficiaries; the average among family nurse practitioner prescribers was 1,305. 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.