NPPES file of Aug 9, 2026

Nathan G. Berger, M.D.

Reproductive Endocrinology Physician · Baltimore, MD

Nathan G. Berger, M.D. is a reproductive endocrinology physician with a practice address in Baltimore, Maryland, and NPI 1639148851, issued on Mar 17, 2006. Check the license (Maryland D0023905, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1639148851
Name
Nathan G. Berger
Credential
M.D.
Primary taxonomy
Reproductive Endocrinology Physician 207VE0102X
License number
D0023905 MD
Self-reported in NPPES; status is on the state search
Practice location
200 E 33RD St Ste 486, Baltimore, MD 21218
Phone
(410) 554-2683
Enumerated
Mar 17, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(410) 554-2900
Medicare enrollment
Enrolled (PECOS I20110622000610); accepts Medicare assignment
Medical or professional school
Johns Hopkins University School Of Medicine, 1979
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Verify Nathan G. Berger in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMaryland Board of Physicians
    Search for license D0023905
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Maryland license search

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73% more Medicare Part D claims than the average reproductive endocrinology physician in 2024

142 Medicare Part D claims for 48 beneficiaries, against an average of 82 among the 302 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.

  1. Nathan Berger142
  2. Specialty average82

Most prescribed

  1. Fluconazole20 claims
  2. Estradiol14 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.

The practice group's MIPS final score for 2023 (Medicare payment program): 75.9 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score77.4
  2. Costout of 100 · 30%45.8
  3. Promoting interoperabilityout of 100 · 25%96.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $98.98

6 payments; by number, the most common kind was food and beverage; the largest payer was Astellas Pharma US Inc. The 1,066 providers of this specialty with any payment received $1,086.52 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Nathan Berger$98.98
  2. Specialty average$1,086.52

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

  1. Seton Medical Group IncCatonsville, MD

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Reproductive Endocrinology Physician providers in Maryland

There are 40 reproductive endocrinology physician records in Maryland.

Other reproductive endocrinology physician records in Maryland

  1. Selma Amrane, M.D.Towson, MD1508109372
  2. Emily BarnardBaltimore, MD1396181046
  3. Jason Bromer, M.D.Frederick, MD1619997491
  4. Billy Catherino, M.D., PH.D.Bethesda, MD1134261985
  5. Alicia Christy, M.D.Bethesda, MD1972665453
  6. Craig Cropp, M.D.Damascus, MD1548467541
  7. Joseph Doyle, M.D.Rockville, MD1871650929
  8. Charlene Echague, D.O.Bethesda, MD1689093916
  9. Oluyemisi Famuyiwa, M.D.Rockville, MD1710090394
  10. Lisa Halvorson, MDRockville, MD1568412088

Common questions

What is Nathan G. Berger, M.D.'s NPI number?

Nathan G. Berger, M.D.'s National Provider Identifier (NPI) is 1639148851, issued on Mar 17, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Nathan G. Berger, M.D. located?

The NPPES record lists a practice address at 200 E 33RD St Ste 486, Baltimore, MD, 21218. Phone: (410) 554-2683. Providers update this record themselves, so call before visiting.

How can I verify Nathan G. Berger, M.D.'s license?

NPPES lists Maryland license number D0023905, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Nathan G. Berger, M.D. prescribe under Medicare Part D?

In 2024, Nathan G. Berger, M.D. had 142 Medicare Part D claims for 48 beneficiaries; the average among reproductive endocrinology physician prescribers was 82. Part D covers Medicare prescriptions only.

What is Nathan G. Berger, M.D.'s MIPS final score?

The 2023 MIPS final score is 75.9 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.