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Edit this profileAt a glance
- 15225 Shady Grove Rd, Suite 201, Rockville, MD 20850
About Dr. Griffen
Based in Rockville, MD, Daniel L. Griffen, M.D. is listed in the NPI registry under cardiovascular disease (cardiology). Daniel graduated from University of Iowa, Rj & L Carver College of Medicine in 1982. Daniel is also listed as specializing in cardiovascular disease. According to Medicare claims data, Daniel cared for 5,842 Medicare patients across 8,541 services. The services billed most often include routine electrocardiogram (ecg) using at least 12 leads with interpretation and report, established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, and ultrasound of heart with color-depicted blood flow, rate, direction and valve function. NPI 1083640080 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (301) 670-3000
- Email not available
Practice Locations
15225 SHADY GROVE RD SUITE 201
Rockville, MD 20850
Conditions Commonly Evaluated or Treated
Within Cardiovascular Disease generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Most searched conditions
Coronary and ischemic heart disease
Heart failure and cardiomyopathy
Heart rhythm
Symptoms and functional disorders
Valve and structural heart
Vascular and risk factors
Artery & vascular
Heart inflammation
Heart muscle
Heart valves
Vascular disease
Procedures & services
Most searched procedures
Office and noninvasive testing
Advanced imaging
Consultations
Diagnostic testing
Diagnostics
Heart devices
- Biventricular Pacemaker (Cardiac Resynchronization Therapy)
- Implantable Loop Recorder (Cardiac Monitor Implant)
Heart imaging
Heart procedures
Heart rhythm procedures
Imaging
Implants
Recovery & rehabilitation
Vascular imaging
Procedures Most Often Billed to Medicare
8,541 services · 5,842 patients · 19 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
2,477 | More than most peers in Cardiovascular Disease… |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
1,416 | More than most peers in Cardiovascular Disease… |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
1,397 | More than most peers in Cardiovascular Disease… |
| Ultrasound of heart, follow-up | Treatment | 93308 |
105 | More than most peers in Cardiovascular Disease… |
| Ultrasound of heart blood flow, valves and chambers, follow-up | Treatment | 93321 |
97 | More often than most peers in Cardiovascular Disease… |
| Heart rhythm recording continous external ekg over more than 48 hours up to 7 days | Treatment | 93242 |
78 | More than most peers in Cardiovascular Disease… |
| Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report | Treatment | 93351 |
73 | More often than most peers in Cardiovascular Disease… |
| Ultrasound of heart with color-depicted blood flow, rate and valve function | Treatment | 93325 |
44 | As often as other peers in Cardiovascular Disease… |
| Exercise or drug-induced heart stress test with electrocardiogram (ecg) with supervision and review by physician | Treatment | 93015 |
34 | Less often than most peers in Cardiovascular Disease… |
| Heart rhythm recording of continous external ekg over 8-15 days | Treatment | 93246 |
24 | As often as other peers in Cardiovascular Disease… |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other cardiovascular diseases at this location 4
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 3
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 — 29 related providers in 4 groups
Other cardiovascular diseases in Rockville 7
Same specialty, same city.
Trained at University of Iowa, Rj & L Carver College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1982 at University of Iowa, Rj & L Carver College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 6
Providers in MD who bill this service to Medicare most often.
Common questions
What is Daniel L. Griffen's specialty?
Daniel L. Griffen is a cardiovascular disease (cardiology) in Rockville, MD. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Daniel L. Griffen?
Daniel L. Griffen is listed at 15225 Shady Grove Rd Suite 201, Rockville, MD 20850. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Daniel L. Griffen?
The number on file is (301) 670-3000. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Daniel L. Griffen's NPI number?
Daniel L. Griffen's National Provider Identifier is 1083640080. 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
What is Daniel L. Griffen's education?
Daniel L. Griffen attended University of Iowa, Rj & L Carver College of Medicine, graduating in 1982. This comes from the CMS National Downloadable File.
CMS public data
How long has Daniel L. Griffen been practicing?
Daniel L. Griffen has 44 years experience. Calculated from a graduation year of 1982, reported in the CMS National Downloadable File.
CMS public data
What is Daniel L. Griffen known for?
According to Medicare billing data, Daniel L. Griffen provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and ultrasound of heart with color-depicted blood flow, rate, direction and valve function, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Daniel L. Griffen confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Daniel L. Griffen. If this is you, claiming it is free.
Guide.md
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