NPPES file of Aug 9, 2026

Weyman Lam

Allergy & Immunology Physician · Tulsa, OK

Weyman Lam is an allergy & immunology physician with a practice address in Tulsa, Oklahoma, and NPI 1225442130, issued on Jun 18, 2014. Check the license (Oklahoma 34414, as entered in NPPES) on the Oklahoma Board of Medical Licensure and Supervision; 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
1225442130
Name
Weyman Lam
Primary taxonomy
Allergy & Immunology Physician 207K00000X
License number
34414 OK
Self-reported in NPPES; status is on the state search
Practice location
6160 S Yale Ave, Tulsa, OK 74136
Phone
(918) 495-2636
Enumerated
Jun 18, 2014
Record last updated
Apr 13, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(918) 495-2609
Medicare enrollment
Enrolled (PECOS I20190524002254); 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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Also registered at 6160 S Yale Ave

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

  1. Mark Allison, MDOphthalmology Physician1891795480
  2. Mary Ames, R.D.Registered Dietitian1174590145
  3. James Anthamatten, DOOphthalmology Physician1639178494
  4. Nathaniel Applegate, DPMPrimary Podiatric Medicine Podiatrist1871783373
  5. Barbara Baker, MDEndocrinology, Diabetes & Metabolism Physician1962402743
  6. Robert Bosse, PA-CMedical Physician Assistant1164691218

Verify Weyman Lam in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersOklahoma Board of Medical Licensure and Supervision
    Search for license 34414
    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 Oklahoma 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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96% more Medicare Part D claims than the average allergy & immunology physician in 2024

1,456 Medicare Part D claims for 310 beneficiaries, against an average of 741 among the 2,899 providers of this specialty who prescribed in Part D. Brand-name drugs were 26% of claims.

  1. Weyman Lam1,456
  2. Specialty average741

Most prescribed

  1. Hydroxyzine Hcl205 claims
  2. Ipratropium Bromide155 claims
  3. Azelastine Hcl153 claims
  4. Trelegy Ellipta114 claims
  5. Famotidine113 claims
  6. Fluticasone Propionate106 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 79.4 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 score77.8
  2. Costout of 100 · 30%54.4
  3. Promoting interoperabilityout of 100 · 25%99.0
  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: $4,158.70

144 payments; by number, the most common kind was food and beverage; the largest payer was Genzyme Corporation. The 2,496 providers of this specialty with any payment received $8,321.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Weyman Lam$4,158.70
  2. Specialty average$8,321.81

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. Warren Clinic IncTulsa, OK

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

Weyman Lam among 19 allergy & immunology physician records in Oklahoma

Weyman Lam is one of 19 allergy & immunology physician records with a practice address in Oklahoma. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 84% of them.

  • NPI issued2014 · 84% of these records are older, 11% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2014 · median 1998 among the 12 with a school on file
  • Record last updated2020 · 68% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207K00000X and a Oklahoma practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Allergy & Immunology Physician providers in Oklahoma

There are 19 allergy & immunology physician records in Oklahoma.

The 8 allergy & immunology physician records with the nearest ZIP codes

  1. Terence Carey, M.D.Tulsa, OK 741361003998816
  2. Christopher Gifford, MDTulsa, OK 741361578562336
  3. Michelle Montalbano, M.D.Tulsa, OK 741361437104544
  4. Lynn Wiens, MDTulsa, OK 741361861465916
  5. Mark Hamra, M.D.Broken Arrow, OK 740121164428215
  6. Bret Haymore, MDBroken Arrow, OK 740121376503102
  7. Timothy Trojan, MDEnid, OK 737031518125053
  8. Aisha Mohammed, MDLawton, OK 735051942721543

Common questions

What is Weyman Lam's NPI number?

Weyman Lam's National Provider Identifier (NPI) is 1225442130, issued on Jun 18, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Weyman Lam located?

The NPPES record lists a practice address at 6160 S Yale Ave, Tulsa, OK, 74136. Phone: (918) 495-2636. Providers update this record themselves, so call before visiting.

How can I verify Weyman Lam's license?

NPPES lists Oklahoma license number 34414, as entered by the provider. Search the Oklahoma Board of Medical Licensure and Supervision at https://www.okmedicalboard.org/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Weyman Lam prescribe under Medicare Part D?

In 2024, Weyman Lam had 1,456 Medicare Part D claims for 310 beneficiaries; the average among allergy & immunology physician prescribers was 741. Part D covers Medicare prescriptions only.

What is Weyman Lam's MIPS final score?

The 2023 MIPS final score is 79.4 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.