Dr. Michael J. Larock, MD
- Medicare services, 2024
- 945
- Medicare patients, 2024
- 438
- Part D claims, 2024
- 114
- Hospital affiliations
- 2
- Industry payments
- $142
- 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. Larock'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. Michael J. Larock is a hospitalist in Bryn Mawr, Pennsylvania
Dr. Larock practices at Bryn Mawr Hospital in Bryn Mawr, Pennsylvania, part of Main Line Health System.
Dr. Larock's NPI, 1639138829, was assigned on March 17, 2006. Dr. Larock graduated from Eastern Virginia Medical School in 1991. Dr. Larock holds Pennsylvania license MD051324L.
- NPI
- 1639138829NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0042314197
- NPI enumeration date
- March 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (610) 526-3000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 61
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Michael J. Larock practices at Bryn Mawr Hospital in Bryn Mawr, Pennsylvania
Dr. Larock'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. Michael J. Larock is affiliated with 4 sites of care and 2 medical groups
Dr. Larock's primary practice is Bryn Mawr Hospital in Bryn Mawr, Pennsylvania, part of Main Line Health System. Dr. Larock is also affiliated with Lehigh Valley Hospital-Cedar Crest. The medical group on file is Main Line Health. Dmand AI also links Dr. Larock to 1 more group practice or clinic, 1 home health agency and 1 medical group, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Michael J. Larock's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Larock practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Bryn Mawr Hospital | Available with a free account |
| +3 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dmand AI maps EHR vendors, IT decision makers and buying committees across Main Line Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Michael J. Larock is one of 1,233 hospitalists in Pennsylvania
Hospitalist is Dr. Larock's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Larock is licensed in Pennsylvania.
Specialties and state licenses
- Hospitalist, PennsylvaniaPrimary
Hospitalists near Dr. Larock
Counts of hospitalists 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. Michael J. Larock billed Medicare for 945 services in 2024
CMS data shows 945 Medicare services from Dr. Larock across 6 procedure codes in 2024, for 438 Medicare patients. Medicare paid $85,487 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Larock's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 9432024: 945No change
Dr. Larock compared with the Pennsylvania median for hospitalists, 2024
- Dr. Larock
- Pennsylvania median
- Medicare services
- 945vs 4132.3 times
- Medicare patients
- 438vs 2062.1 times
- Part D claims
- 43vs 6837% below
Medians across 1,187 hospitalists in Pennsylvania with Dmand AI profiles that report each measure.
Dr. Larock'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. Michael J. Larock treated 438 Medicare patients in 2024, average age 79
CMS counts 438 Medicare patients who saw Dr. Larock in 2024. The largest group is 75 to 84, with 173 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 16% are also on Medicaid. Their average risk score is 2.50, 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. Larock's median patient age at 73, with 53% women.
Dr. Larock's Medicare patients by age, 2024
Dr. Larock's Medicare patients by sex, 2024
- Women23053%
- Men20847%
Chronic conditions among Dr. Larock's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis61%
- Ischemic heart disease56%
- Chronic kidney disease53%
- Heart failure50%
- Mood disorders48%
- Atrial fibrillation46%
Share of Medicare patients with each condition. A patient can have several.
Dr. Larock's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Michael J. Larock wrote 114 Medicare Part D claims in 2024
In 2024, Dr. Larock wrote 114 Medicare Part D claims for 59 patients. 94% of them were for generic drugs. CMS names the drug for 43 of them, across 3 drugs with 11 or more claims each, at $378 in total drug cost. In 2022, CMS named 13 claims across 1 drug.
Dr. Larock's Part D claims by kind of drug, 2024
- Generic107 claims94%
- Brand-name and other7 claims6%
Dr. Larock's most prescribed drugs by claims, 2023
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. Larock's Part D claims, 2024
- Antibiotics13%15 of 114 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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 132023: 43231%
Drugs named by CMS: 3 in 2023, 1 in 2022.
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
How Dr. Michael J. Larock takes part in Medicare
Dr. Larock 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. Michael J. Larock received $142 in industry payments in 2016
CMS Open Payments shows 10 general payments to Dr. Larock from 8 drug and device companies in 2016. Food and beverage make up the largest share, 100% of the total. AstraZeneca Pharmaceuticals LP paid the most, $34.
Companies that paid Dr. Larock the most, 2016 to 2016
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Michael J. Larock graduated from Eastern Virginia Medical School
Dr. Larock graduated from Eastern Virginia Medical School in 1991.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Michael J. Larock'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. Michael J. Larock
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. Michael J. Larock's NPI number?
Dr. Michael J. Larock's NPI number is 1639138829. It was assigned on March 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Michael J. Larock?
Dr. Michael J. Larock is a hospitalist in Bryn Mawr, Pennsylvania. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. Michael J. Larock practice?
Dr. Larock practices at 130 South Bryn Mawr Ave, Bryn Mawr, PA 19010. Dr. Larock's primary practice is Bryn Mawr Hospital in Bryn Mawr, Pennsylvania, part of Main Line Health System. Dmand AI also links Dr. Larock to 1 group practice or clinic, 1 home health agency and 1 medical group.
What is Dr. Michael J. Larock's office phone number?
The practice phone on file for Dr. Larock is (610) 526-3000.
What is Dr. Michael J. Larock's medical license number?
Dr. Larock holds Pennsylvania license MD051324L.
Which hospitals is Dr. Michael J. Larock affiliated with?
Dr. Larock practices at Bryn Mawr Hospital in Bryn Mawr, Pennsylvania. Dr. Larock is also affiliated with Lehigh Valley Hospital-Cedar Crest.
What medical group is Dr. Michael J. Larock part of?
Dr. Larock is linked to Main Line Health. Dmand AI links Dr. Larock to 1 more medical group.
Does Dr. Michael J. Larock accept Medicare?
Yes. CMS data shows Dr. Larock billed Medicare for 945 services in 2024, and Dr. Larock accepts Medicare assignment.
How many Medicare patients does Dr. Michael J. Larock see?
CMS counts 438 Medicare patients who saw Dr. Larock in 2024, with an average age of 79.
What services does Dr. Michael J. Larock bill to Medicare?
In 2024, Dr. Larock's most billed Medicare services were hospital inpatient care (99233), hospital inpatient care (99239) and hospital inpatient care (99232).
Show 4 more questionsShow fewer questions
Where did Dr. Michael J. Larock go to medical school?
Dr. Larock graduated from Eastern Virginia Medical School in 1991.
What drugs does Dr. Michael J. Larock prescribe most?
In 2023 Medicare Part D data, Dr. Larock's most prescribed drugs by claims were Pantoprazole Sodium, Cefuroxime and Prednisone.
Has Dr. Michael J. Larock received payments from drug or device companies?
CMS Open Payments shows $142 in general payments to Dr. Larock from 8 companies from 2016 to 2016. The largest total came from AstraZeneca Pharmaceuticals LP.
How long has Dr. Michael J. Larock been practicing?
Dr. Larock graduated from medical school in 1991, 35 years ago.
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