NPPES file of Aug 9, 2026

Willem Eduard Bok, MD

Psychiatry Physician · Lancaster, SC

Willem Eduard Bok, MD is a psychiatry physician with a practice address in Lancaster, South Carolina, and NPI 1487637179, issued on Nov 28, 2005. Check the license (South Carolina 81772, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1487637179
Name
Willem Eduard Bok
Credential
MD
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
81772 SC
Self-reported in NPPES; status is on the state search
Practice location
134 E Rebound Road, Lancaster, SC 29720
Phone
(803) 313-3700
Enumerated
Nov 28, 2005
Record last updated
Aug 10, 2021 (not updated in 5 years: call before relying on the address or phone)
Fax
(803) 289-0912
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Verify Willem Eduard Bok in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
    Search for license 81772
    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 South Carolina license search

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91% fewer Medicare Part D claims than the average psychiatry physician in 2024

92 Medicare Part D claims for 26 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D.

  1. Willem Bok92
  2. Specialty average1,000

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.

Willem Eduard Bok among 891 psychiatry physician records in South Carolina

Willem Eduard Bok, MD is one of 891 psychiatry physician records with a practice address in South Carolina. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 98% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 41% of these records are
  • Record last updated2021 · 52% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Psychiatry Physician providers in South Carolina

There are 891 psychiatry physician records in South Carolina.

The 8 psychiatry physician records with the nearest ZIP codes

  1. Aimee GemmeLake Wylie, SC 297101871411702
  2. Katie Chambers, MDRock Hill, SC 297321770921751
  3. Tammy Chen, M.D.Rock Hill, SC 297321013055706
  4. Lauren Collins, PMHNPTega Cay, SC 297081841835212
  5. Tarunendu Dwivedi, M.D.Rock Hill, SC 297321063481844
  6. Mark EnglishRock Hill, SC 297321316532294
  7. Bret Guidry, M.D.Rock Hill, SC 297321588634554
  8. Hayne McMeekin, MDRock Hill, SC 297321356306039

Common questions

What is Willem Eduard Bok, MD's NPI number?

Willem Eduard Bok, MD's National Provider Identifier (NPI) is 1487637179, issued on Nov 28, 2005. An NPI identifies a provider in billing; it is not a license.

Where is Willem Eduard Bok, MD located?

The NPPES record lists a practice address at 134 E Rebound Road, Lancaster, SC, 29720. Phone: (803) 313-3700. Providers update this record themselves, so call before visiting.

How can I verify Willem Eduard Bok, MD's license?

NPPES lists South Carolina license number 81772, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Willem Eduard Bok, MD prescribe under Medicare Part D?

In 2024, Willem Eduard Bok, MD had 92 Medicare Part D claims for 26 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.