Physician Profile
Unclaimed ProfileAbout GRIGG
Based in Mountain Home, AR, William Spencer Grigg, D.O. is listed in the NPI registry under internal medicine. William is also listed as specialising in student in an organized health care education program and clinical cardiac electrophysiology.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Common questions
What does Dr. Grigg specialise in?
Dr. Grigg is an internal medicine in Mountain Home, AR. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “INTERNAL MEDICINE”.
NPI registry
Where is Dr. Grigg located?
Dr. Grigg is listed at 555 W 6TH ST BOX 679, Mountain Home, AR 72653. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Grigg's phone number?
The number on file is (870) 425-8288. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Grigg's NPI number?
Dr. Grigg's National Provider Identifier is 1578050266. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Grigg go to medical school?
Dr. Grigg attended Other, graduating in 2018. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Grigg been practising?
Dr. Grigg has 8 years experience. Calculated from a graduation year of 2018, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Grigg do most often?
According to Medicare billing data, Dr. Grigg the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Grigg confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Grigg. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (870) 425-8288
- Email not available
Practice Locations
555 W 6TH ST BOX 679
Mountain Home, AR 72653
Procedures Most Often Billed to Medicare
66 services · 64 patients · 2 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
48 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
18 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other internal medicines at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 6
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 23 related providers in 3 groups
Other internal medicines in Mountain Home 7
Same specialty, same city.
Trained at Other 8
Other providers in the same specialty who trained at the same institution.
Class of 2018 at Other 8
Providers who graduated from the same medical school in the same year.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.