Mark T. Claus, M.D.
Allergy Physician · Brockton, MA
Mark T. Claus, M.D. is an allergy physician with a practice address in Brockton, Massachusetts, and NPI 1518910686, issued on May 18, 2006. Check the license (Massachusetts 59634, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Mark T. Claus
- Credential
- M.D.
- Primary taxonomy
- Allergy Physician 207KA0200X
- License number
- 59634 MA
Self-reported in NPPES; status is on the state search - Practice location
- 35 Pearl St, Brockton, MA 02301
- Phone
- (508) 584-6300
- Enumerated
- May 18, 2006
- Record last updated
- Feb 4, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (508) 580-4664
- Medicaid ID
- 3036529 MA
- Medicare enrollment
- Enrolled (PECOS I20060420000160); accepts Medicare assignment
- Medical or professional school
- Boston University School Of Medicine, 1982
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest allergy physician records → All 37 in Massachusetts → Look up another NPI →
Also registered at 35 Pearl St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Linda Abdelahad, MED,CCC,SLPSpeech-Language Pathologist1063525400
- Carrie Dluhy, AU.D.Audiologist1043332737
- Bridget Kosilla, AUDAudiologist1790343820
- Michael Lawrence, M.D.Allergy Physician1477506541
- Darlene Madore, CPNP-PC, RNNurse Practitioner1487018735
- Vicki Wilson, M.S.Audiologist1598031916
Verify Mark T. Claus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 59634Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4.2 times the Medicare Part D claims of the average allergy physician in 2024
3,149 Medicare Part D claims for 449 beneficiaries, against an average of 750 among the 645 providers of this specialty who prescribed in Part D. Brand-name drugs were 37% of claims.
Most prescribed
- Montelukast Sodium585 claims
- Fluticasone Propionate353 claims
- Albuterol Sulfate Hfa319 claims
- Levocetirizine Dihydrochloride278 claims
- Azelastine Hcl183 claims
- Breo Ellipta112 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.
No measured MIPS final score for 2023
CMS assigned the neutral MIPS final score of 75 without scoring Quality, Cost, Promoting Interoperability or Improvement Activities. It is an administrative threshold, so PlainDoctor does not compare it with measured clinicians.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,444.00
88 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 502 providers of this specialty with any payment received $9,080.33 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
- Asthma And Allergy Physicians LLCMilford, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark T. Claus among 37 allergy physician records in Massachusetts
Mark T. Claus, M.D. is one of 37 allergy physician records with a practice address in Massachusetts. 46% 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 24% of them.
- NPI issued2006 · 24% of these records are older, 19% newer
- In a Medicare fileYes · 46% of these records are
- In the CMS Doctors and Clinicians fileYes · 35% of these records are
- Graduated1982 · median 1986 among the 13 with a school on file
- Record last updated2008 · 89% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207KA0200X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Allergy Physician providers in Massachusetts
There are 37 allergy physician records in Massachusetts.
All 37 in Massachusetts → Every provider in Brockton → Allergy Physician nationwide →
The 8 allergy physician records with the nearest ZIP codes
- Michael Lawrence, M.D.Brockton, MA 023011477506541
- Margaret Vallen Mashikian, M.D.South Weymouth, MA 021901881751394
- Zuhayr Hemady, M.D.Quincy, MA 021691275591257
- Theresia Bajusz, MDBrookline, MA 024461699853820
- Joel Bleier, MDMedford, MA 021551912904624
- Caroline McFadden, M.D.Somerville, MA 021441437362993
- Ann Wang-Dohlman, M.D.Newton, MA 024621134286693
- Sachin Baxi, M.D.Boston, MA 021151053375626
Common questions
What is Mark T. Claus, M.D.'s NPI number?
Mark T. Claus, M.D.'s National Provider Identifier (NPI) is 1518910686, issued on May 18, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark T. Claus, M.D. located?
The NPPES record lists a practice address at 35 Pearl St, Brockton, MA, 02301. Phone: (508) 584-6300. Providers update this record themselves, so call before visiting.
How can I verify Mark T. Claus, M.D.'s license?
NPPES lists Massachusetts license number 59634, 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 Mark T. Claus, M.D. prescribe under Medicare Part D?
In 2024, Mark T. Claus, M.D. had 3,149 Medicare Part D claims for 449 beneficiaries; the average among allergy physician prescribers was 750. Part D covers Medicare prescriptions only.
What is Mark T. Claus, M.D.'s MIPS final score?
CMS assigned the neutral MIPS final score of 75 for 2023 without scoring any category, so it is not a measured result.
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.