Dr. David Mark Walzer, MD
- Medicare services, 2024
- 2,249
- Medicare patients, 2024
- 101
- Part D claims, 2024
- 2,156
- Hospital affiliations
- 1
- Industry payments
- $101
- Practice address
- 130 South Bryn Mawr Ave, Bryn Mawr, PA 19010
- Practice phone
- Call (610) 526-3000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Walzer's professional email, personal email and mobile number
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Dr. David Mark Walzer is a psychiatrist in Bryn Mawr, Pennsylvania
Dr. Walzer practices at Bryn Mawr Hospital in Bryn Mawr, Pennsylvania, part of Main Line Health System.
Dr. Walzer's NPI, 1457482291, was assigned on March 7, 2007. Dr. Walzer graduated from The Hahneman Medical College and Hospital in 1978. Dr. Walzer holds Pennsylvania license MD023216E.
- NPI
- 1457482291NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294782371
- NPI enumeration date
- March 7, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (610) 526-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. David Mark Walzer practices at Bryn Mawr Hospital in Bryn Mawr, Pennsylvania
Dr. Walzer's primary practice is Bryn Mawr Hospital, at 130 South Bryn Mawr Ave, Bryn Mawr, PA 19010 in Montgomery County. The practice phone is (610) 526-3000.
- Bryn Mawr Hospital130 South Bryn Mawr Ave, Bryn Mawr, PA 19010 · Montgomery CountyPhone(610) 526-3000
Source: Dmand AI Affiliation Data
Dr. David Mark Walzer is affiliated with 1 site of care
Dr. Walzer's primary practice is Bryn Mawr Hospital in Bryn Mawr, Pennsylvania, part of Main Line Health System.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. David Mark Walzer's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Walzer practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bryn Mawr Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. David Mark Walzer is one of 1,873 psychiatrists in Pennsylvania
Psychiatry is Dr. Walzer's primary specialty in the NPI Registry, under taxonomy code 2084P0800X. Dr. Walzer is licensed in Pennsylvania.
Specialties and state licenses
- Psychiatry, PennsylvaniaPrimary
Psychiatrists near Dr. Walzer
Counts of psychiatrists 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. David Mark Walzer billed Medicare for 2,249 services in 2024
CMS data shows 2,249 Medicare services from Dr. Walzer across 5 procedure codes in 2024, for 101 Medicare patients. Medicare paid $136,776 for them. Every service was in an office.
Dr. Walzer's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,2612024: 1,265No change
- Tests and treatments
- 2023: 9392024: 9845%
Dr. Walzer compared with the Pennsylvania median for psychiatrists, 2024
- Dr. Walzer
- Pennsylvania median
- Medicare services
- 2,249vs 15314.7 times
- Medicare patients
- 101vs 452.2 times
- Part D claims
- 2,008vs 19110.5 times
Medians across 2,062 psychiatrists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Walzer'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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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Walzer and other psychiatrists in Pennsylvania.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. David Mark Walzer treated 101 Medicare patients in 2024, average age 73
CMS counts 101 Medicare patients who saw Dr. Walzer in 2024. The largest group is 75 to 84, with 41 patients. 75% of them have high cholesterol, and 75% have mood disorders. Their average risk score is 1.36, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Walzer's median patient age at 62, with 56% women.
Dr. Walzer's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Walzer's Medicare patients by sex, 2024
- Women5756%
- Men4444%
Chronic conditions among Dr. Walzer's Medicare patients, 2024
- High cholesterol75%
- Mood disorders75%
- High blood pressure64%
- Depression57%
- Arthritis53%
- Bipolar disorder53%
- Anxiety51%
- Ischemic heart disease36%
Share of Medicare patients with each condition. A patient can have several.
Dr. Walzer's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 62
Patient panel by sex, all payers
- Women56%
- Men39%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. David Mark Walzer wrote 2,156 Medicare Part D claims in 2024
In 2024, Dr. Walzer wrote 2,156 Medicare Part D claims for 149 patients. 96% of them were for generic drugs. CMS names the drug for 2,008 of them, across 42 drugs with 11 or more claims each, at $71,971 in total drug cost. In 2023, CMS named 2,377 claims across 41 drugs.
Dr. Walzer's Part D claims by kind of drug, 2024
- Generic2,074 claims96%
- Brand-name and other82 claims4%
Dr. Walzer's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Walzer's Part D claims, 2024
- Antipsychotics, patients 65 and over12%266 of 2,156 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 2,3772024: 2,00816%
Drugs named by CMS: 42 in 2024, 41 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. David Mark Walzer offers telehealth to Medicare patients
Dr. Walzer accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Walzer as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. David Mark Walzer received $101 in industry payments from 2016 to 2019
CMS Open Payments shows 5 general payments to Dr. Walzer from 3 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 70% of the total. Allergan Inc. paid the most, $66.
General payments to Dr. Walzer by program year, 2016 to 2019
General payments to Dr. Walzer by kind, 2016 to 2019
- Food and beverage$7170%
- Education$3030%
Companies that paid Dr. Walzer the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. David Mark Walzer graduated from The Hahneman Medical College and Hospital
Dr. Walzer graduated from The Hahneman Medical College and Hospital in 1978.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. David Mark Walzer'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 | Dmand AI Affiliation 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)Medicare Part D Prescribers - by Provider (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. David Mark Walzer
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. David Mark Walzer's NPI number?
Dr. David Mark Walzer's NPI number is 1457482291. It was assigned on March 7, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. David Mark Walzer?
Dr. David Mark Walzer is a psychiatrist in Bryn Mawr, Pennsylvania. The primary specialty in the NPI Registry is Psychiatry Physician (taxonomy code 2084P0800X).
Where does Dr. David Mark Walzer practice?
Dr. Walzer practices at 130 South Bryn Mawr Ave, Bryn Mawr, PA 19010. Dr. Walzer's primary practice is Bryn Mawr Hospital in Bryn Mawr, Pennsylvania, part of Main Line Health System.
What is Dr. David Mark Walzer's office phone number?
The practice phone on file for Dr. Walzer is (610) 526-3000.
What is Dr. David Mark Walzer's medical license number?
Dr. Walzer holds Pennsylvania license MD023216E.
Which hospitals is Dr. David Mark Walzer affiliated with?
Dr. Walzer practices at Bryn Mawr Hospital in Bryn Mawr, Pennsylvania.
Does Dr. David Mark Walzer accept Medicare?
Yes. CMS data shows Dr. Walzer billed Medicare for 2,249 services in 2024, and Dr. Walzer accepts Medicare assignment.
Does Dr. David Mark Walzer offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Walzer as offering telehealth services.
How many Medicare patients does Dr. David Mark Walzer see?
CMS counts 101 Medicare patients who saw Dr. Walzer in 2024, with an average age of 73.
What services does Dr. David Mark Walzer bill to Medicare?
In 2024, Dr. Walzer's most billed Medicare services were office visit, established patient (99212), psychiatric service (90836) and office visit, established patient (99213).
Show 4 more questionsShow fewer questions
Where did Dr. David Mark Walzer go to medical school?
Dr. Walzer graduated from The Hahneman Medical College and Hospital in 1978.
What drugs does Dr. David Mark Walzer prescribe most?
In 2024 Medicare Part D data, Dr. Walzer's most prescribed drugs by claims were Lorazepam, Clonazepam and Quetiapine Fumarate.
Has Dr. David Mark Walzer received payments from drug or device companies?
CMS Open Payments shows $101 in general payments to Dr. Walzer from 3 companies from 2016 to 2019. The largest total came from Allergan Inc.
How long has Dr. David Mark Walzer been practicing?
Dr. Walzer graduated from medical school in 1978, 48 years ago.
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