NPPES file of Aug 9, 2026

Heather N. Longval, M.D.

Family Medicine Physician · Sioux City, IA

Heather N. Longval, M.D. is a family medicine physician with a practice address in Sioux City, Iowa, and NPI 1831147818, issued on May 4, 2006. Check the license (Iowa 34717, as entered in NPPES) on the Iowa Board of Medicine; 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
1831147818
Name
Heather N. Longval
Credential
M.D.
Primary taxonomy
Family Medicine Physician 207Q00000X
License number
34717 IA
Self-reported in NPPES; status is on the state search
Practice location
4545 Sergeant RD, Sioux City, IA 51106
Phone
(712) 274-2400
Enumerated
May 4, 2006
Record last updated
Feb 27, 2026
Fax
(712) 274-1487
Medicaid IDs
7711490 IA
10025306900 IA
1288142 IA
2288142 IA
Medicare enrollment
Enrolled (PECOS I20040727000421); accepts Medicare assignment
Medical or professional school
Sanford School Of Medicine Of University Of South Dakota, 2001
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 medicine physician records → All 2,336 in Iowa → Look up another NPI →

Also registered at 4545 Sergeant RD

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

  1. Richard Andersen, DOFamily Medicine Physician1467612267
  2. Amir Andrawis, M.D.Family Medicine Physician1255303145
  3. Nicholas Bechtold, D.O.Family Medicine Physician1932493749
  4. Janice Galli, DOFamily Medicine Physician1710948088
  5. Betty Gilbert, LISWSocial Worker1710039557
  6. Michael Jennings, MDFamily Medicine Physician1528029170

Verify Heather N. Longval in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIowa Board of Medicine
    Search for license 34717    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
Open the Iowa 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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2.6 times the Medicare Part D claims of the average family medicine physician in 2024

9,351 Medicare Part D claims for 823 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 155 claims were for opioids.

  1. Heather Longval9,351
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium840 claims
  2. Levothyroxine Sodium751 claims
  3. Amlodipine Besylate376 claims
  4. Omeprazole324 claims
  5. Losartan Potassium274 claims
  6. Hydrochlorothiazide228 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: $496.81

33 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Heather Longval$496.81
  2. Specialty average$902.55

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. Family Health Care OF Siouxland PLCSioux City, IA

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

Heather N. Longval among 2,336 family medicine physician records in Iowa

Heather N. Longval, M.D. is one of 2,336 family medicine physician records with a practice address in Iowa. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 16% of them.

  • NPI issued2006 · 16% of these records are older, 48% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 59% of these records are
  • Graduated2001 · median 2006 among the 1,367 with a school on file
  • Record last updated2026 · 61% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Iowa practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

88 family medicine physician records list a practice address in Sioux City

They are 88 of the 1,486 NPPES records with a practice address in Sioux City, and 2,336 family medicine physician records in Iowa.

All 2,336 in Iowa → Every provider in Sioux City → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Richard Andersen, DOSioux City, IA 511061467612267
  2. Amir Andrawis, M.D.Sioux City, IA 511061255303145
  3. Rodney Cassens, MDSioux City, IA 511061063455053
  4. Janice Galli, DOSioux City, IA 511061710948088
  5. Gregory Halbur, M.D.Sioux City, IA 511061780624205
  6. Michael Jennings, MDSioux City, IA 511061528029170
  7. Jeffrey Kellogg, DOSioux City, IA 511061083657084
  8. Richard Kipp, D.O.Sioux City, IA 511061003874967

Common questions

What is Heather N. Longval, M.D.'s NPI number?

Heather N. Longval, M.D.'s National Provider Identifier (NPI) is 1831147818, issued on May 4, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Heather N. Longval, M.D. located?

The NPPES record lists a practice address at 4545 Sergeant RD, Sioux City, IA, 51106. Phone: (712) 274-2400. Providers update this record themselves, so call before visiting.

How can I verify Heather N. Longval, M.D.'s license?

NPPES lists Iowa license number 34717, as entered by the provider. Search the Iowa Board of Medicine at https://dial.iowa.gov/about-dial/boards-and-commissions/medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Heather N. Longval, M.D. prescribe under Medicare Part D?

In 2024, Heather N. Longval, M.D. had 9,351 Medicare Part D claims for 823 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.