NPPES file of Aug 9, 2026

Walter Moon Jo, MD

Cardiovascular Disease Physician · N Chelmsford, MA

Walter Moon Jo, MD is a cardiovascular disease physician with a practice address in N Chelmsford, Massachusetts, and NPI 1043250004, issued on Jun 7, 2006. Check the license (Massachusetts 150611, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; 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
1043250004
Name
Walter Moon Jo
Credential
MD
Primary taxonomy
Cardiovascular Disease Physician 207RC0000X
License number
150611 MA
Self-reported in NPPES; status is on the state search
Practice location
14 Research PL, N Chelmsford, MA 01863
Phone
(978) 256-6607
Enumerated
Jun 7, 2006
Record last updated
Mar 29, 2013 (not updated in 13 years: call before relying on the address or phone)
Fax
(978) 250-8189
Medicaid ID
3176223 MA
Medicare enrollment
Enrolled (PECOS I20040909000791); accepts Medicare assignment
Medical or professional school
Tufts University School Of Medicine, 1993
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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Also registered at 14 Research PL

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Omar Ali, MDInterventional Cardiology Physician1881634848
  2. Richard Birkhead, MDCardiovascular Disease Physician1437106119
  3. Christie Champion, MSN,AGACNP-BCNurse Practitioner1477953404
  4. Brian Cullingford, M.D.Cardiovascular Disease Physician1033378088
  5. Eric Ewald, MDCardiovascular Disease Physician1639126311
  6. Elisabeth Gennis, MDOrthopaedic Surgery Physician1023300670

Verify Walter Moon Jo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 150611
    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 Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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2.2 times the Medicare Part D claims of the average cardiovascular disease physician in 2024

6,831 Medicare Part D claims for 953 beneficiaries, against an average of 3,078 among the 20,728 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. Walter Jo6,831
  2. Specialty average3,078

Most prescribed

  1. Metoprolol Succinate829 claims
  2. Atorvastatin Calcium759 claims
  3. Lisinopril505 claims
  4. Eliquis475 claims
  5. Amlodipine Besylate474 claims
  6. Rosuvastatin Calcium380 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: $184.87

7 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 16,686 providers of this specialty with any payment received $3,819.56 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Walter Jo$184.87
  2. Specialty average$3,819.56

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through 2 group practices

  1. Atrius Health IncNeedham, MA
  2. Lgh Merrimack Valley Cardiology Associates, LLCNorth Chelmsford, MA

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

Walter Moon Jo among 1,080 cardiovascular disease physician records in Massachusetts

Walter Moon Jo, MD is one of 1,080 cardiovascular disease physician records with a practice address in Massachusetts. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 17% of them.

  • NPI issued2006 · 17% of these records are older, 45% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 65% of these records are
  • Graduated1993 · median 2001 among the 698 with a school on file
  • Record last updated2013 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RC0000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

8 cardiovascular disease physician records list a practice address in N Chelmsford

They are 8 of the 66 NPPES records with a practice address in N Chelmsford, and 1,080 cardiovascular disease physician records in Massachusetts.

The 8 cardiovascular disease physician records with the nearest ZIP codes

  1. Artem Astsaturov, M.D.North Chelmsford, MA 018631588058036
  2. Richard Birkhead, MDN Chelmsford, MA 018631437106119
  3. Brian Cullingford, M.D.N Chelmsford, MA 018631033378088
  4. Bryan Dolan, D.O.North Chelmsford, MA 018631801259296
  5. Eric Ewald, MDN Chelmsford, MA 018631639126311
  6. Christopher Hong, M.D.North Chelmsford, MA 018631730234626
  7. Miret Ibrahim, MDN Chelmsford, MA 018631467637884
  8. Harsh Sanchorawala, MDN Chelmsford, MA 018631497783294

Common questions

What is Walter Moon Jo, MD's NPI number?

Walter Moon Jo, MD's National Provider Identifier (NPI) is 1043250004, issued on Jun 7, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Walter Moon Jo, MD located?

The NPPES record lists a practice address at 14 Research PL, N Chelmsford, MA, 01863. Phone: (978) 256-6607. Providers update this record themselves, so call before visiting.

How can I verify Walter Moon Jo, MD's license?

NPPES lists Massachusetts license number 150611, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does Walter Moon Jo, MD prescribe under Medicare Part D?

In 2024, Walter Moon Jo, MD had 6,831 Medicare Part D claims for 953 beneficiaries; the average among cardiovascular disease physician prescribers was 3,078. 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.