Timothy Lax, MD
Allergy & Immunology (Internal Medicine) Physician · Brookline, MA
Timothy Lax, MD is an allergy & immunology (internal medicine) physician with a practice address in Brookline, Massachusetts, and NPI 1487810156, issued on Aug 1, 2008. Check the license (Massachusetts 248449, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Timothy Lax
- Credential
- MD
- Primary taxonomy
- Allergy & Immunology (Internal Medicine) Physician 207RA0201X
- License numbers
- 248449 MA
036120469 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1 Brookline PL, Brookline, MA 02445
- Phone
- (617) 278-8100
- Enumerated
- Aug 1, 2008
- Record last updated
- Jul 7, 2015 (not updated in 11 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20110914000374); accepts Medicare assignment
- Medical or professional school
- Oregon Health Sciences University School Of Medicine, 2005
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy & immunology (internal medicine) physician records → All 25 in Massachusetts → Look up another NPI →
Also registered at 1 Brookline PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Bryann Bromley, M.D.Diagnostic Radiology Physician1104825959
Verify Timothy Lax in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 248449Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6% fewer Medicare Part D claims than the average allergy & immunology (internal medicine) physician in 2024
741 Medicare Part D claims for 142 beneficiaries, against an average of 789 among the 429 providers of this specialty who prescribed in Part D. Brand-name drugs were 53% of claims.
Most prescribed
- Ipratropium Bromide65 claims
- Albuterol Sulfate Hfa62 claims
- Montelukast Sodium60 claims
- Azelastine Hcl55 claims
- Breo Ellipta43 claims
- Privigen42 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: $642.77
24 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 321 providers of this specialty with any payment received $7,456.30 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.
Bills Medicare through one group practice
- Berkshire Allergy Care PCPittsfield, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy Lax among 25 allergy & immunology (internal medicine) physician records in Massachusetts
Timothy Lax, MD is one of 25 allergy & immunology (internal medicine) physician records with a practice address in Massachusetts. 96% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 20% of them.
- NPI issued2008 · 20% of these records are older, 72% newer
- In a Medicare fileYes · 96% of these records are
- In the CMS Doctors and Clinicians fileYes · 96% of these records are
- Graduated2005 · median 2012 among the 24 with a school on file
- Record last updated2015 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RA0201X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy & Immunology (Internal Medicine) Physician providers in Massachusetts
There are 25 allergy & immunology (internal medicine) physician records in Massachusetts.
All 25 in Massachusetts → Every provider in Brookline → Allergy & Immunology (Internal Medicine) Physician nationwide →
The 8 allergy & immunology (internal medicine) physician records with the nearest ZIP codes
- Ayobami Akenroye, MD, MPHChestnut Hill, MA 024671881005379
- Nora Barrett, M.D.Chestnut Hill, MA 024671770552838
- Trisha RayChestnut Hill, MA 024671497135792
- Ryan Eid, MDDuxbury, MA 023321215464540
- Maxim Lutskiy, M.D.Boston, MA 022151518125988
- Kari Nadeau, M.D., PH.D.Boston, MA 022151871652644
- Qura Tul Ain Rashid, M.D.Boston, MA 022151568777035
- Zhenhong LiDartmouth, MA 027471811275506
Common questions
What is Timothy Lax, MD's NPI number?
Timothy Lax, MD's National Provider Identifier (NPI) is 1487810156, issued on Aug 1, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Timothy Lax, MD located?
The NPPES record lists a practice address at 1 Brookline PL, Brookline, MA, 02445. Phone: (617) 278-8100. Providers update this record themselves, so call before visiting.
How can I verify Timothy Lax, MD's license?
NPPES lists Massachusetts license number 248449, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Timothy Lax, MD prescribe under Medicare Part D?
In 2024, Timothy Lax, MD had 741 Medicare Part D claims for 142 beneficiaries; the average among allergy & immunology (internal medicine) physician prescribers was 789. 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.