NPPES file of Aug 9, 2026

Nathan Buck McLamb, MD

Clinical Pathology Physician · Saint Louis, MO

Nathan Buck McLamb, MD is a clinical pathology physician with a practice address in Saint Louis, Missouri, and NPI 1326493354, issued on Apr 27, 2016. Check the license (Missouri 2023034438, as entered in NPPES) on the Missouri Board of Registration for the Healing Arts; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1326493354
Name
Nathan Buck McLamb
Credential
MD
Primary taxonomy
Clinical Pathology Physician 207ZC0006X
License number
2023034438 MO
Self-reported in NPPES; status is on the state search
Practice location
1 Barnes Jewish Hospital Plz, Saint Louis, MO 63110
Phone
(314) 362-5641
Enumerated
Apr 27, 2016
Record last updated
Apr 17, 2025
Fax
(314) 362-0369
Medicaid ID
200130054 MO
Medicare enrollment
Enrolled (PECOS I20230911002255); accepts Medicare assignment
Medical or professional school
Brody School Of Medicine At East Carolina University, 2016
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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Also registered at 1 Barnes Jewish Hospital Plz

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

  1. Fizza Abbas, MDInternal Medicine Physician1588079230
  2. Catey Abbott, DOInternal Medicine Physician1699355347
  3. Ramzi Abboud, MDMedical Oncology Physician1649684200
  4. Amy Abdalla, MDRadiation Oncology Physician1932959954
  5. Heba Abdelal, MDAnatomic Pathology & Clinical Pathology Physician1033633383
  6. Ali Abdelhay, MDHospitalist Physician1619540606

Verify Nathan Buck McLamb in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMissouri Board of Registration for the Healing Arts
    Search for license 2023034438
    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 Missouri 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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The practice group's MIPS final score for 2023 (Medicare payment program): 83.9 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score86.3
  2. Costout of 100 · 30%67.4
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $122.33

1 payment: food and beverage; the largest payer was Genzyme Corporation. The 86 providers of this specialty with any payment received $17,997.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nathan McLamb$122
  2. Specialty average$17,997

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. Washington UniversitySaint Louis, MO

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

Nathan Buck McLamb among 22 clinical pathology physician records in Missouri

Nathan Buck McLamb, MD is one of 22 clinical pathology physician records with a practice address in Missouri. 41% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 23% of them.

  • NPI issued2016 · 23% of these records are older, 64% newer
  • In a Medicare fileYes · 41% of these records are
  • In the CMS Doctors and Clinicians fileYes · 32% of these records are
  • Record last updated2025 · 27% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZC0006X and a Missouri practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Clinical Pathology Physician providers in Missouri

There are 22 clinical pathology physician records in Missouri.

The 8 clinical pathology physician records with the nearest ZIP codes

  1. Vahid Azimi, MDSaint Louis, MO 631101154947810
  2. Nicholas Borcherding, MDSaint Louis, MO 631101154948560
  3. Patricia Hernandez, MDSaint Louis, MO 631101568031664
  4. Rohan Kodgule, MDSaint Louis, MO 631101093491300
  5. Carly Maucione, MDSaint Louis, MO 631101720764541
  6. Jonathan Parker, M.D., PH.D.Saint Louis, MO 631101598118846
  7. Nicholas Spies, MDSaint Louis, MO 631101134789761
  8. Jeffrey Szymanski, M.D., PHDSt Louis, MO 631101568870749

Common questions

What is Nathan Buck McLamb, MD's NPI number?

Nathan Buck McLamb, MD's National Provider Identifier (NPI) is 1326493354, issued on Apr 27, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Nathan Buck McLamb, MD located?

The NPPES record lists a practice address at 1 Barnes Jewish Hospital Plz, Saint Louis, MO, 63110. Phone: (314) 362-5641. Providers update this record themselves, so call before visiting.

How can I verify Nathan Buck McLamb, MD's license?

NPPES lists Missouri license number 2023034438, as entered by the provider. Search the Missouri Board of Registration for the Healing Arts at https://www.fsmb.org/contact-a-state-medical-board/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

What is Nathan Buck McLamb, MD's MIPS final score?

The 2023 MIPS final score is 83.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.