Karen De Castro Dah, M.D.
Nephrology Physician · Salisbury, MD
Karen De Castro Dah, M.D. is a nephrology physician with a practice address in Salisbury, Maryland, and NPI 1730467804, issued on Jul 23, 2011. Check the license (Maryland D82637, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Karen De Castro Dah
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- D82637 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1821 Sweetbay Dr Ste 1, Salisbury, MD 21804
- Phone
- (410) 546-4427
- Enumerated
- Jul 23, 2011
- Record last updated
- Jun 19, 2019 (not updated in 7 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20220323002067); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest nephrology physician records → All 337 in Maryland → Look up another NPI →
Also registered at 1821 Sweetbay Dr Ste 1
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Jonathan Andrews, FNPFamily Nurse Practitioner1073006862
- Ali Arif, MDNephrology Physician1578124038
- Muhammad Hanif, MDNephrology Physician1144731100
- Muhammad Jahngir, M.D.Nephrology Physician1225692411
- Kazi Khan, MDNephrology Physician1063402857
- Carrie Sterling, CRNPFamily Nurse Practitioner1528337219
Verify Karen De Castro Dah in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D82637Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
56% fewer Medicare Part D claims than the average nephrology physician in 2024
651 Medicare Part D claims for 124 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 16% of claims.
Most prescribed
- Amlodipine Besylate55 claims
- Calcitriol47 claims
- Hydralazine Hcl44 claims
- Sevelamer Carbonate37 claims
- Furosemide30 claims
- Calcium Acetate27 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.
Industry payments in 2024: $1,969.91
89 payments; by number, the most common kind was food and beverage; the largest payer was Mallinckrodt Hospital Products Inc. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Capital Nephrology, PCGreenbelt, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karen De Castro Dah among 337 nephrology physician records in Maryland
Karen De Castro Dah, M.D. is one of 337 nephrology physician records with a practice address in Maryland. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2011, is newer than 73% of them.
- NPI issued2011 · 73% of these records are older, 26% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2011 · median 2001 among the 232 with a school on file
- Record last updated2019 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RN0300X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Nephrology Physician providers in Maryland
There are 337 nephrology physician records in Maryland.
All 337 in Maryland → Every provider in Salisbury → Nephrology Physician nationwide →
The 8 nephrology physician records with the nearest ZIP codes
- Ali Arif, MDSalisbury, MD 218041578124038
- Muhammad Hanif, MDSalisbury, MD 218041144731100
- Muhammad Jahngir, M.D.Salisbury, MD 218041225692411
- Kazi Khan, MDSalisbury, MD 218041063402857
- Kazi Khan, MDSalisbury, MD 218041659959062
- Janki Patel, M.D.Salisbury, MD 218041992956106
- Constante Tan, MDSalisbury, MD 218041508848011
- Kimberly Gilbert, M.D.Salisbury, MD 218011740458819
Common questions
What is Karen De Castro Dah, M.D.'s NPI number?
Karen De Castro Dah, M.D.'s National Provider Identifier (NPI) is 1730467804, issued on Jul 23, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Karen De Castro Dah, M.D. located?
The NPPES record lists a practice address at 1821 Sweetbay Dr Ste 1, Salisbury, MD, 21804. Phone: (410) 546-4427. Providers update this record themselves, so call before visiting.
How can I verify Karen De Castro Dah, M.D.'s license?
NPPES lists Maryland license number D82637, 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 Karen De Castro Dah, M.D. prescribe under Medicare Part D?
In 2024, Karen De Castro Dah, M.D. had 651 Medicare Part D claims for 124 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
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.