Dr. Lawrence A. Walser, MD
- Medicare services, 2024
- 127
- Medicare patients, 2024
- 80
- Part D claims, 2019
- 250
- Hospital affiliations
- 1
- Industry payments
- $543
- Practice address
- 1 Heros Way, Riverhead, NY 11901
- Practice phone
- Call (631) 548-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Walser's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Lawrence A. Walser is a pulmonologist in Riverhead, New York
Dr. Walser practices at Peconic Bay Medical Center in Riverhead, New York, part of Northwell Health.
Dr. Walser's NPI, 1669486023, was assigned on July 28, 2006. Dr. Walser graduated from State University of New York Downstate Medical Center College of Medicine in 1979. Dr. Walser holds New York license 149921.
- NPI
- 1669486023NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5395727291
- NPI enumeration date
- July 28, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (631) 548-6000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 73
- Medical school graduation
- 1979
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Lawrence A. Walser practices at 2 locations in Riverhead, New York
Dr. Walser's primary practice is Peconic Bay Medical Center, at 1 Heros Way, Riverhead, NY 11901 in Suffolk County. The practice phone is (631) 548-6000. Dr. Walser also practices at Peconic Bay Medical Center, 1300 Roanoke Ave, Riverhead, NY 11901.
- Peconic Bay Medical CenterPrimary1 Heros Way, Riverhead, NY 11901 · Suffolk CountyPhone(631) 548-6000
- Peconic Bay Medical Center1300 Roanoke Ave, Riverhead, NY 11901 · Suffolk CountyPhone(631) 548-6116
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Lawrence A. Walser is affiliated with 2 sites of care and 1 medical group
Dr. Walser's primary practice is Peconic Bay Medical Center in Riverhead, New York, part of Northwell Health. The medical group on file is Peconic Bay Medical Center. Dmand AI also links Dr. Walser to 1 more group practice or clinic, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Lawrence A. Walser's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walser practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Peconic Bay Medical Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Lawrence A. Walser is one of 1,056 pulmonologists in New York
Pulmonary disease is Dr. Walser's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Walser is licensed in New York.
Specialties and state licenses
- Pulmonary disease, New YorkPrimary
Pulmonologists near Dr. Walser
Counts of pulmonologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Lawrence A. Walser billed Medicare for 127 services in 2024
CMS data shows 127 Medicare services from Dr. Walser across 3 procedure codes in 2024, for 80 Medicare patients. Medicare paid $15,196 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Walser's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2222024: 12743%
Dr. Walser compared with the New York median for pulmonologists, 2024
- Dr. Walser
- New York median
- Medicare services
- 127vs 67681% below
- Medicare patients
- 80vs 27070% below
- Part D claims
- 250vs 64461% below
Medians across 1,044 pulmonologists in New York with Dmand AI profiles that report each measure.
Dr. Walser's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Lawrence A. Walser treated 80 Medicare patients in 2024, average age 77
CMS counts 80 Medicare patients who saw Dr. Walser in 2024. The largest group is 75 to 84, with 35 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 19% are also on Medicaid. Their average risk score is 2.66, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Walser's median patient age at 64, with 50% women.
Dr. Walser's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Walser's Medicare patients by sex, 2024
- Women3848%
- Men4253%
Chronic conditions among Dr. Walser's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis71%
- Ischemic heart disease68%
- Heart failure61%
- Atrial fibrillation60%
- COPD60%
- Chronic kidney disease50%
Share of Medicare patients with each condition. A patient can have several.
Dr. Walser's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women50%
- Men50%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Lawrence A. Walser wrote 250 Medicare Part D claims in 2019
In 2019, Dr. Walser wrote 250 Medicare Part D claims. They cover 12 drugs, with $104,538 in total drug cost. In 2018, CMS named 1,443 claims across 37 drugs.
Dr. Walser's most prescribed drugs by claims, 2019
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 1,4432019: 25083%
Drugs named by CMS: 12 in 2019, 37 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
How Dr. Lawrence A. Walser takes part in Medicare
Dr. Walser accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Lawrence A. Walser received $543 in industry payments from 2016 to 2024
CMS Open Payments shows 15 general payments to Dr. Walser from 10 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 77% of the total. Medtronic Vascular, Inc. paid the most, $161.
General payments to Dr. Walser by program year, 2016 to 2024
General payments to Dr. Walser by kind, 2016 to 2024
- Food and beverage$41677%
- Education$12723%
Companies that paid Dr. Walser the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Lawrence A. Walser graduated from State University of New York Downstate Medical Center College of Medicine
Dr. Walser graduated from State University of New York Downstate Medical Center College of Medicine in 1979.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Lawrence A. Walser's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Affiliation DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Lawrence A. Walser
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Lawrence A. Walser's NPI number?
Dr. Lawrence A. Walser's NPI number is 1669486023. It was assigned on July 28, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Lawrence A. Walser?
Dr. Lawrence A. Walser is a pulmonologist in Riverhead, New York. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).
Where does Dr. Lawrence A. Walser practice?
Dr. Walser practices at 1 Heros Way, Riverhead, NY 11901. Dr. Walser also practices at 1300 Roanoke Ave, Riverhead, NY 11901. Dr. Walser's primary practice is Peconic Bay Medical Center in Riverhead, New York, part of Northwell Health. Dmand AI also links Dr. Walser to 1 group practice or clinic.
What is Dr. Lawrence A. Walser's office phone number?
The practice phone on file for Dr. Walser is (631) 548-6000.
What is Dr. Lawrence A. Walser's medical license number?
Dr. Walser holds New York license 149921.
Which hospitals is Dr. Lawrence A. Walser affiliated with?
Dr. Walser practices at Peconic Bay Medical Center in Riverhead, New York.
What medical group is Dr. Lawrence A. Walser part of?
Dr. Walser is linked to Peconic Bay Medical Center.
Does Dr. Lawrence A. Walser accept Medicare?
Yes. CMS data shows Dr. Walser billed Medicare for 127 services in 2024, and Dr. Walser accepts Medicare assignment.
How many Medicare patients does Dr. Lawrence A. Walser see?
CMS counts 80 Medicare patients who saw Dr. Walser in 2024, with an average age of 77.
What services does Dr. Lawrence A. Walser bill to Medicare?
In 2024, Dr. Walser's most billed Medicare services were hospital inpatient care (99232), critical care (99291) and hospital inpatient care (99222).
Show 4 more questionsShow fewer questions
Where did Dr. Lawrence A. Walser go to medical school?
Dr. Walser graduated from State University of New York Downstate Medical Center College of Medicine in 1979.
What drugs does Dr. Lawrence A. Walser prescribe most?
In 2019 Medicare Part D data, Dr. Walser's most prescribed drugs by claims were Symbicort, Advair Diskus and Incruse Ellipta.
Has Dr. Lawrence A. Walser received payments from drug or device companies?
CMS Open Payments shows $543 in general payments to Dr. Walser from 10 companies from 2016 to 2024. The largest total came from Medtronic Vascular, Inc.
How long has Dr. Lawrence A. Walser been practicing?
Dr. Walser graduated from medical school in 1979, 47 years ago.
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