| Preexisting Condition, Preauthorized Check System (PAC), Preauthorized Check Plan | |
| Preferred Risk, Preliminaryterm, Premature Distribution Penalty |
A technical momentum indicator showing the relationship between two moving averages. To calculate the PPO, subtract the 26-day exponential moving average (EMA) from the nine-day EMA, and then divide this difference by the 26-day EMA. The end result is a percentage that tells the trader where the short-term average is relative to the longer-term average.
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Investopedia Says:
The PPO and the moving average convergence divergence (MACD) are both momentum indicators that measure the difference between the 26-day and the nine-day exponential moving averages. The main difference between these indicators is that the MACD reports the simple difference between the exponential moving averages, whereas the PPO expresses this difference as a percentage. This allows a trader to use the PPO indicator to compare stocks with different prices more easily. For example, regardless of the stock's price, a PPO result of 10 means the short-term average is 10% above the long-term average.
Related Links:
Find out how this indicator may help improve the average investor's entry and exit points. An Introduction To Oscillators
Momentum can be used with other tools to be an effective buy/sell indicator. Momentum Indicates Stock Price Strength
Learn to trade in the direction of short-term momentum. A Primer On The MACD
Learn how this momentum indicator is used to determine price action on a stock. MACD Histogram Helps Determine Trend Changes
A formal agreement between a purchaser of a dental benefits program and a defined group of dentists for the delivery of dental services to a specific patient population as an adjunct to a traditional plan, using discounted fees for cost savings.

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This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (December 2007) |
In health insurance in the United States, a preferred provider organization (or PPO, sometimes referred to as a participating provider organization or preferred provider option) is a managed care organization of medical doctors, hospitals, and other health care providers who have covenanted with an insurer or a third-party administrator to provide health care at reduced rates to the insurer's or administrator's clients.
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A preferred provider organization[1] is a subscription-based medical care arrangement. A membership allows a substantial discount below the regularly charged rates of the designated professionals partnered with the organization. Preferred provider organizations themselves earn money by charging an access fee to the insurance company for the use of their network (unlike the usual insurance with premiums and corresponding payments paid either in full or partially by the insurance provider to the medical doctor). They negotiate with providers to set fee schedules, and handle disputes between insurers and providers. PPOs can also contract with one another to strengthen their position in certain geographic areas without forming new relationships directly with providers. This will be mutually beneficial in theory, as the insurer will be billed at a reduced rate when its insureds utilize the services of the "preferred" provider and the provider will see an increase in its business as almost all and or insureds in the organization will use only providers who are members. PPOs have gained popularity in the past decade[when?] because, although they tend to have slightly higher premiums than HMOs and other more restrictive plans, they offer patients more flexibility overall.[2]
Other features of a preferred provider organization generally include utilization review, where representatives of the insurer or administrator review the records of treatments provided to verify that they are appropriate for the condition being treated rather than largely or solely being performed to increase the amount of reimbursement due. Another near-universal feature is a pre-certification requirement, in which scheduled (non-emergency) hospital admissions and, in some instances outpatient surgery as well, must have prior approval of the insurer and often undergo "utilization review" in advance.
An exclusive provider organization (EPO) is a type of managed care plan that combines features of HMOs and PPOs. It is referred to as exclusive because the employers agree not to contract with any other plan.
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