Dr. Nathan G. Berger, MD
- Medicare services, 2024
- 154
- Medicare patients, 2024
- 93
- Part D claims, 2024
- 142
- Hospital affiliations
- 1
- Industry payments
- $6,687
- Practice address
- 900 Caton Avenue, Baltimore, MD 21229
- Practice phone
- Call (410) 368-6000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Berger'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. Nathan G. Berger is a reproductive endocrinology physician in Baltimore, Maryland
Dr. Berger practices at Ascension Saint Agnes Hospital in Baltimore, Maryland, part of Ascension Health Alliance.
Dr. Berger's NPI, 1639148851, was assigned on March 17, 2006. Dr. Berger graduated from Johns Hopkins University School of Medicine in 1979. Dr. Berger holds Maryland license D0023905.
- NPI
- 1639148851NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0244418283
- NPI enumeration date
- March 17, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (410) 368-6000
- 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. Nathan G. Berger practices at Ascension Saint Agnes Hospital in Baltimore, Maryland
Dr. Berger's primary practice is Ascension Saint Agnes Hospital, at 900 Caton Avenue, Baltimore, MD 21229 in Baltimore City. The practice phone is (410) 368-6000.
- Ascension Saint Agnes Hospital900 Caton Avenue, Baltimore, MD 21229 · Baltimore CityPhone(410) 368-6000
Source: Dmand AI Affiliation Data
Dr. Nathan G. Berger is affiliated with 3 sites of care and 2 medical groups
Dr. Berger's primary practice is Ascension Saint Agnes Hospital in Baltimore, Maryland, part of Ascension Health Alliance. The medical group on file is MedStar Medical Group. Dmand AI also links Dr. Berger to 1 more physician office, 1 group practice or clinic 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. Nathan G. Berger's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Berger practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Ascension Saint Agnes Hospital | Available with a free account |
| +2 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Ascension Health Alliance and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Nathan G. Berger is one of 44 reproductive endocrinology physicians in Maryland
Reproductive endocrinology is Dr. Berger's primary specialty in the NPI Registry, under taxonomy code 207VE0102X. Dr. Berger is licensed in Maryland.
Specialties and state licenses
- Reproductive endocrinology, MarylandPrimary
Reproductive endocrinology physicians near Dr. Berger
Counts of reproductive endocrinology physicians 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. Nathan G. Berger billed Medicare for 154 services in 2024
CMS data shows 154 Medicare services from Dr. Berger across 6 procedure codes in 2024, for 93 Medicare patients. Medicare paid $7,545 for them. Every service was in an office.
Dr. Berger's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 692024: 647%
- Office and hospital visits
- 2023: 422024: 5224%
- Lab and pathology
- 2023: 392024: 383%
Dr. Berger'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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Source: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data
Dr. Nathan G. Berger treated 93 Medicare patients in 2024, average age 64
CMS counts 93 Medicare patients who saw Dr. Berger in 2024. The largest group is 65 to 74, with 36 patients. 75% of them have high blood pressure, and 70% have high cholesterol. 33% are also on Medicaid. Their average risk score is 0.87, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Berger's median patient age at 45, with 99% women.
Dr. Berger's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Berger's Medicare patients, 2024
- High blood pressure75%
- High cholesterol70%
- Arthritis47%
- Mood disorders29%
- Anxiety28%
- Diabetes26%
- Depression20%
- Asthma13%
Share of Medicare patients with each condition. A patient can have several.
Dr. Berger's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 45
Patient panel by sex, all payers
- Women99%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nathan G. Berger wrote 142 Medicare Part D claims in 2024
In 2024, Dr. Berger wrote 142 Medicare Part D claims for 48 patients. 87% of them were for generic drugs. CMS names the drug for 34 of them, across 2 drugs with 11 or more claims each, at $812 in total drug cost. In 2023, CMS named 15 claims across 1 drug.
Dr. Berger's Part D claims by kind of drug, 2024
- Generic124 claims87%
- Brand-name18 claims13%
Dr. Berger'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. Berger's Part D claims, 2024
- Antibiotics9%13 of 142 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: 152024: 34127%
Drugs named by CMS: 2 in 2024, 1 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
How Dr. Nathan G. Berger takes part in Medicare
Dr. Berger 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. Nathan G. Berger received $6,687 in industry payments from 2016 to 2025
CMS Open Payments shows 88 general payments to Dr. Berger from 22 drug and device companies from 2016 to 2025. Consulting fees make up the largest share, 50% of the total. Hologic Inc paid the most, $4,988.
General payments to Dr. Berger by program year, 2016 to 2025
General payments to Dr. Berger by kind, 2016 to 2025
- Consulting fees$3,37550%
- Food and beverage$3,22748%
- Education$851%
Companies that paid Dr. Berger the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nathan G. Berger graduated from Johns Hopkins University School of Medicine
Dr. Berger graduated from Johns Hopkins University School of Medicine in 1979.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Nathan G. Berger'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) |
| 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. Nathan G. Berger
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. Nathan G. Berger's NPI number?
Dr. Nathan G. Berger's NPI number is 1639148851. It was assigned on March 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Nathan G. Berger?
Dr. Nathan G. Berger is a reproductive endocrinology physician in Baltimore, Maryland. The primary specialty in the NPI Registry is Reproductive Endocrinology Physician (taxonomy code 207VE0102X).
Where does Dr. Nathan G. Berger practice?
Dr. Berger practices at 900 Caton Avenue, Baltimore, MD 21229. Dr. Berger's primary practice is Ascension Saint Agnes Hospital in Baltimore, Maryland, part of Ascension Health Alliance. Dmand AI also links Dr. Berger to 1 physician office, 1 group practice or clinic and 1 medical group.
What is Dr. Nathan G. Berger's office phone number?
The practice phone on file for Dr. Berger is (410) 368-6000.
What is Dr. Nathan G. Berger's medical license number?
Dr. Berger holds Maryland license D0023905.
Which hospitals is Dr. Nathan G. Berger affiliated with?
Dr. Berger practices at Ascension Saint Agnes Hospital in Baltimore, Maryland.
What medical group is Dr. Nathan G. Berger part of?
Dr. Berger is linked to MedStar Medical Group. Dmand AI links Dr. Berger to 1 more medical group.
Does Dr. Nathan G. Berger accept Medicare?
Yes. CMS data shows Dr. Berger billed Medicare for 154 services in 2024, and Dr. Berger accepts Medicare assignment.
How many Medicare patients does Dr. Nathan G. Berger see?
CMS counts 93 Medicare patients who saw Dr. Berger in 2024, with an average age of 64.
What services does Dr. Nathan G. Berger bill to Medicare?
In 2024, Dr. Berger's most billed Medicare services were medicare service (G0101), office visit, established patient (99214) and lab and pathology test (81002).
Show 4 more questionsShow fewer questions
Where did Dr. Nathan G. Berger go to medical school?
Dr. Berger graduated from Johns Hopkins University School of Medicine in 1979.
What drugs does Dr. Nathan G. Berger prescribe most?
In 2024 Medicare Part D data, Dr. Berger's most prescribed drugs by claims were Fluconazole and Estradiol.
Has Dr. Nathan G. Berger received payments from drug or device companies?
CMS Open Payments shows $6,687 in general payments to Dr. Berger from 22 companies from 2016 to 2025. The largest total came from Hologic Inc.
How long has Dr. Nathan G. Berger been practicing?
Dr. Berger graduated from medical school in 1979, 47 years ago.
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