Dr. William Mugg, MD
What this data tells you about Dr. Mugg
Dr. William Mugg is an internal medicine specialist in So Hadley, MA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Mugg performed 1,927 Medicare services in 2023. These records do not provide a deduplicated patient total.
The Data Coverage level for Dr. Mugg is High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary — 2023
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
593 | $93 | $145 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
355 | $63 | $110 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
222 | $8 | $10 |
| Electrocardiogram (EKG), 12-lead A standard heart rhythm test using at least 12 leads to record electrical activity. A healthcare provider interprets the results and provides a written report. |
139 | $10 | $55 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
139 | $118 | $248 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
129 | $3 | $10 |
| Stool test for blood A laboratory test that checks a stool sample for hidden blood using a chemical reaction. This test helps detect bleeding in the digestive tract. |
104 | $4 | $10 |
| Home visit, established patient, low complexity A physician visits an existing patient at their residence to provide care involving a low level of medical decision making. The visit lasts at least 30 minutes. |
70 | $54 | $110 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
51 | $34 | $35 |
| Influenza vaccine, quadrivalent, 0.5 ml dosage | 49 | $20 | $50 |
| Home visit, established patient, moderate complexity A home visit for an established patient involving moderate medical decision making. The visit requires at least 40 minutes of time if time is used to determine the level of service. |
28 | $97 | $175 |
| Ear wax removal A procedure to remove impacted ear wax from the ear canal. |
16 | $39 | $70 |
| Transitional care management, high complexity Coordination of care for a patient transitioning from a short-term hospital stay or other facility to home or another care setting. This service addresses a high-complexity medical problem. |
16 | $226 | $300 |
| Home health plan of care certification Certification by a physician or allowed practitioner for Medicare-covered home health services under a home health plan of care. This includes contacting the home health agency and reviewing reports of patient status required by physicians. |
16 | $34 | $80 |
Geographic Context
4.4 mi
Data Sources
| Provider Registry | ✓ NPPES | NPPES snapshot; verify current record |
| Medicare Enrollment | ✓ PECOS | PECOS snapshot |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | — No payments | N/A |
| Disciplinary History | — Not included | N/A |
This provider has data in 3 of 4 available federal datasets, with a Data Coverage level of High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Mugg is a clinical cardiology specialist, with above-average Medicare volume (top 12% in MA), with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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This page combines public CMS records with calculated summaries and explanatory procedure labels. These transformations are not verbatim federal records. Sources: NPPES ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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